diff --git a/src/xrAICore/AISpaceBase.cpp b/src/xrAICore/AISpaceBase.cpp
index e28f44d34b6..308981a5284 100644
--- a/src/xrAICore/AISpaceBase.cpp
+++ b/src/xrAICore/AISpaceBase.cpp
@@ -1,4 +1,4 @@
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "AISpaceBase.hpp"
 #include "Navigation/game_graph.h"
 #include "Navigation/level_graph.h"
diff --git a/src/xrAICore/Components/script_world_property_script.cpp b/src/xrAICore/Components/script_world_property_script.cpp
index b8386f72e4b..a67b386ec4b 100644
--- a/src/xrAICore/Components/script_world_property_script.cpp
+++ b/src/xrAICore/Components/script_world_property_script.cpp
@@ -6,7 +6,7 @@
 //	Description : Script world property script export
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "script_world_property.h"
 #include "operator_abstract.h"
 #include "xrScriptEngine/ScriptExporter.hpp"
diff --git a/src/xrAICore/Components/script_world_state_script.cpp b/src/xrAICore/Components/script_world_state_script.cpp
index 66f60f71d39..a389cb2152b 100644
--- a/src/xrAICore/Components/script_world_state_script.cpp
+++ b/src/xrAICore/Components/script_world_state_script.cpp
@@ -6,7 +6,7 @@
 //	Description : Script world state script export
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "script_world_state.h"
 #include "condition_state.h"
 #include "xrScriptEngine/ScriptExporter.hpp"
diff --git a/src/xrAICore/Navigation/PatrolPath/patrol_path.cpp b/src/xrAICore/Navigation/PatrolPath/patrol_path.cpp
index 3774d2c7bc5..34a4343b9aa 100644
--- a/src/xrAICore/Navigation/PatrolPath/patrol_path.cpp
+++ b/src/xrAICore/Navigation/PatrolPath/patrol_path.cpp
@@ -6,7 +6,7 @@
 //	Description : Patrol path
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "patrol_path.h"
 #include "xrCore/xrCore.h"
 #include "Common/LevelGameDef.h"
diff --git a/src/xrAICore/Navigation/PatrolPath/patrol_path_params.cpp b/src/xrAICore/Navigation/PatrolPath/patrol_path_params.cpp
index a2f2d46d0da..c93445336b2 100644
--- a/src/xrAICore/Navigation/PatrolPath/patrol_path_params.cpp
+++ b/src/xrAICore/Navigation/PatrolPath/patrol_path_params.cpp
@@ -6,7 +6,7 @@
 //	Description : Patrol path parameters class
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "patrol_path_params.h"
 #include "patrol_path_storage.h"
 #include "xrScriptEngine/script_engine.hpp"
diff --git a/src/xrAICore/Navigation/PatrolPath/patrol_path_params_script.cpp b/src/xrAICore/Navigation/PatrolPath/patrol_path_params_script.cpp
index f778f5be0c3..71312428715 100644
--- a/src/xrAICore/Navigation/PatrolPath/patrol_path_params_script.cpp
+++ b/src/xrAICore/Navigation/PatrolPath/patrol_path_params_script.cpp
@@ -6,7 +6,7 @@
 //	Description : Patrol path parameters class script export
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "patrol_path_params.h"
 #include "xrScriptEngine/ScriptExporter.hpp"
 #include "xrScriptEngine/DebugMacros.hpp" // for THROW3 // XXX: move debug macros to xrCore
diff --git a/src/xrAICore/Navigation/PatrolPath/patrol_path_storage.cpp b/src/xrAICore/Navigation/PatrolPath/patrol_path_storage.cpp
index ba9f2646d19..55115e8c530 100644
--- a/src/xrAICore/Navigation/PatrolPath/patrol_path_storage.cpp
+++ b/src/xrAICore/Navigation/PatrolPath/patrol_path_storage.cpp
@@ -6,7 +6,7 @@
 //	Description : Patrol path storage
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "patrol_path_storage.h"
 #include "patrol_path.h"
 #include "patrol_point.h"
diff --git a/src/xrAICore/Navigation/PatrolPath/patrol_point.cpp b/src/xrAICore/Navigation/PatrolPath/patrol_point.cpp
index 7ec65203399..c2361763b05 100644
--- a/src/xrAICore/Navigation/PatrolPath/patrol_point.cpp
+++ b/src/xrAICore/Navigation/PatrolPath/patrol_point.cpp
@@ -6,7 +6,7 @@
 //	Description : Patrol point
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "patrol_point.h"
 #include "Navigation/level_graph.h"
 #include "Navigation/level_graph.h"
diff --git a/src/xrAICore/Navigation/game_graph_script.cpp b/src/xrAICore/Navigation/game_graph_script.cpp
index 52171a5c0f4..80ffcc7f105 100644
--- a/src/xrAICore/Navigation/game_graph_script.cpp
+++ b/src/xrAICore/Navigation/game_graph_script.cpp
@@ -6,7 +6,7 @@
 //	Description : Game graph class script export
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "game_graph.h"
 #include "xrScriptEngine/ScriptExporter.hpp"
 #include "xrScriptEngine/DebugMacros.hpp" // for THROW // XXX: move debug macros to xrCore
diff --git a/src/xrAICore/Navigation/level_graph.cpp b/src/xrAICore/Navigation/level_graph.cpp
index 3e2c7fcccd4..b6f61a191bc 100644
--- a/src/xrAICore/Navigation/level_graph.cpp
+++ b/src/xrAICore/Navigation/level_graph.cpp
@@ -6,7 +6,7 @@
 //	Description : Level graph
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "level_graph.h"
 #include "xrEngine/profiler.h"
 
diff --git a/src/xrAICore/Navigation/level_graph_vertex.cpp b/src/xrAICore/Navigation/level_graph_vertex.cpp
index c2ee150ef1c..3010ffb3af5 100644
--- a/src/xrAICore/Navigation/level_graph_vertex.cpp
+++ b/src/xrAICore/Navigation/level_graph_vertex.cpp
@@ -6,7 +6,7 @@
 //	Description : Level graph vertex functions
 ////////////////////////////////////////////////////////////////////////////
 
-#include "PCH.hpp"
+#include "pch.hpp"
 #include "level_graph.h"
 #include "game_level_cross_table.h"
 #include "xrCore/_fbox2.h"
diff --git a/src/xrAICore/pch.cpp b/src/xrAICore/pch.cpp
index 315e703210c..3854579ae1c 100644
--- a/src/xrAICore/pch.cpp
+++ b/src/xrAICore/pch.cpp
@@ -1 +1 @@
-#include "PCH.hpp"
+#include "pch.hpp"
diff --git a/src/xrAICore/xrAICore.vcxproj b/src/xrAICore/xrAICore.vcxproj
index 78a14104a5e..92632ef1df3 100644
--- a/src/xrAICore/xrAICore.vcxproj
+++ b/src/xrAICore/xrAICore.vcxproj
@@ -98,42 +98,42 @@
     <ClCompile>
       <AdditionalIncludeDirectories>$(SolutionDir);$(xrSdkDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_USRDLL;XRAICORE_EXPORTS;XRGAME_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PrecompiledHeaderFile>PCH.hpp</PrecompiledHeaderFile>
+      <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>$(SolutionDir);$(xrSdkDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_USRDLL;XRAICORE_EXPORTS;XRGAME_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PrecompiledHeaderFile>PCH.hpp</PrecompiledHeaderFile>
+      <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Mixed|Win32'">
     <ClCompile>
       <AdditionalIncludeDirectories>$(SolutionDir);$(xrSdkDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_USRDLL;XRAICORE_EXPORTS;XRGAME_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PrecompiledHeaderFile>PCH.hpp</PrecompiledHeaderFile>
+      <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Mixed|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>$(SolutionDir);$(xrSdkDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_USRDLL;XRAICORE_EXPORTS;XRGAME_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PrecompiledHeaderFile>PCH.hpp</PrecompiledHeaderFile>
+      <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <AdditionalIncludeDirectories>$(SolutionDir);$(xrSdkDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_USRDLL;XRAICORE_EXPORTS;XRGAME_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PrecompiledHeaderFile>PCH.hpp</PrecompiledHeaderFile>
+      <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <AdditionalIncludeDirectories>$(SolutionDir);$(xrSdkDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_USRDLL;XRAICORE_EXPORTS;XRGAME_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <PrecompiledHeaderFile>PCH.hpp</PrecompiledHeaderFile>
+      <PrecompiledHeaderFile>pch.hpp</PrecompiledHeaderFile>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
@@ -242,7 +242,7 @@
     <ClInclude Include="Navigation\vertex_manager_hash_fixed_inline.h" />
     <ClInclude Include="Navigation\vertex_path.h" />
     <ClInclude Include="Navigation\vertex_path_inline.h" />
-    <ClInclude Include="PCH.hpp" />
+    <ClInclude Include="pch.hpp" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="AISpaceBase.cpp" />
@@ -256,7 +256,7 @@
     <ClCompile Include="Navigation\PatrolPath\patrol_path_params_script.cpp" />
     <ClCompile Include="Navigation\PatrolPath\patrol_path_storage.cpp" />
     <ClCompile Include="Navigation\PatrolPath\patrol_point.cpp" />
-    <ClCompile Include="PCH.cpp">
+    <ClCompile Include="pch.cpp">
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Mixed|Win32'">Create</PrecompiledHeader>
diff --git a/src/xrAICore/xrAICore.vcxproj.filters b/src/xrAICore/xrAICore.vcxproj.filters
index fb8ad8ad4c4..0c0cabef455 100644
--- a/src/xrAICore/xrAICore.vcxproj.filters
+++ b/src/xrAICore/xrAICore.vcxproj.filters
@@ -330,9 +330,6 @@
     <ClInclude Include="Navigation\PatrolPath\patrol_path_params_inline.h">
       <Filter>AI\Navigation\PatrolPath\Params</Filter>
     </ClInclude>
-    <ClInclude Include="PCH.hpp">
-      <Filter>Kernel</Filter>
-    </ClInclude>
     <ClInclude Include="Components\problem_solver.h">
       <Filter>AI\Components\ProblemSolver</Filter>
     </ClInclude>
@@ -369,6 +366,9 @@
     <ClInclude Include="AISpaceBase.hpp">
       <Filter>AI</Filter>
     </ClInclude>
+    <ClInclude Include="pch.hpp">
+      <Filter>Kernel</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Navigation\game_graph_script.cpp">
@@ -395,9 +395,6 @@
     <ClCompile Include="Navigation\PatrolPath\patrol_path_params_script.cpp">
       <Filter>AI\Navigation\PatrolPath\Params</Filter>
     </ClCompile>
-    <ClCompile Include="PCH.cpp">
-      <Filter>Kernel</Filter>
-    </ClCompile>
     <ClCompile Include="Components\script_world_state_script.cpp">
       <Filter>AI\Components\ProblemSolver\ConditionState\ScriptWorldState</Filter>
     </ClCompile>
@@ -407,5 +404,8 @@
     <ClCompile Include="AISpaceBase.cpp">
       <Filter>AI</Filter>
     </ClCompile>
+    <ClCompile Include="pch.cpp">
+      <Filter>Kernel</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file