diff --git a/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueFalse.cs b/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueFalse.cs
index 416a1ac3a98..1fa7e9f7905 100644
--- a/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueFalse.cs
+++ b/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueFalse.cs
@@ -15,7 +15,8 @@
 namespace System.Collections
 {
     [BenchmarkCategory(Categories.Libraries, Categories.Collections, Categories.GenericCollections)]
-    [GenericTypeArguments(typeof(int), typeof(int))] // value type
+    [GenericTypeArguments(typeof(int), typeof(int))] // primitive value type
+    [GenericTypeArguments(typeof(BigStruct), typeof(BigStruct))] // big value type
     [GenericTypeArguments(typeof(SmallClass), typeof(SmallClass))] // reference type
     [GenericTypeArguments(typeof(string), typeof(string))] // reference type
     public class TryGetValueFalse<TKey, TValue>
diff --git a/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueTrue.cs b/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueTrue.cs
index 95e2c107ec5..42aa71adb80 100644
--- a/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueTrue.cs
+++ b/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueTrue.cs
@@ -15,9 +15,10 @@
 namespace System.Collections
 {
     [BenchmarkCategory(Categories.Libraries, Categories.Collections, Categories.GenericCollections)]
-    [GenericTypeArguments(typeof(int), typeof(int))] // value type
+    [GenericTypeArguments(typeof(int), typeof(int))] // primitive value type
+    [GenericTypeArguments(typeof(BigStruct), typeof(BigStruct))] // big value type
     [GenericTypeArguments(typeof(SmallClass), typeof(SmallClass))] // reference type
-    [GenericTypeArguments(typeof(string), typeof(string))] // string type
+    [GenericTypeArguments(typeof(string), typeof(string))] // reference type
     public class TryGetValueTrue<TKey, TValue>
     {
         private TKey[] _found;