diff --git a/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataResource.java b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataResource.java
new file mode 100644
index 0000000..526d9af
--- /dev/null
+++ b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataResource.java
@@ -0,0 +1,21 @@
+package dk.jyskebank.tools.enunciate.modules.openapi.confignamespacewithprefix;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import com.webcohesion.enunciate.metadata.rs.TypeHint;
+
+@Path("/path")
+public class DataResource {
+
+	@TypeHint(DataXmlDTO.class)
+	@GET
+	@Path("/xmldto")
+	@Produces(MediaType.APPLICATION_XML)
+    public Response getXmlType() {
+      return Response.ok(new DataXmlDTO()).build();
+	}
+}
diff --git a/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataXmlDTO.java b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataXmlDTO.java
new file mode 100644
index 0000000..9197ecb
--- /dev/null
+++ b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataXmlDTO.java
@@ -0,0 +1,14 @@
+package dk.jyskebank.tools.enunciate.modules.openapi.confignamespacewithprefix;
+
+import javax.xml.bind.annotation.*;
+
+@XmlType(name = "dataXmlDTO", namespace = "http://www.jyskebank.dk/enunciate/openapi/version/1")
+@XmlRootElement(name="dataXmlDTO", namespace = "http://www.jyskebank.dk/enunciate/openapi/version/1")
+@XmlAccessorType(XmlAccessType.FIELD)
+public class DataXmlDTO {
+	@XmlElement(name="aString")
+	private String aString;
+	
+	@XmlElement
+	private DataXmlEnum anEnum;
+}
diff --git a/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataXmlEnum.java b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataXmlEnum.java
new file mode 100644
index 0000000..7285150
--- /dev/null
+++ b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/DataXmlEnum.java
@@ -0,0 +1,9 @@
+package dk.jyskebank.tools.enunciate.modules.openapi.confignamespacewithprefix;
+
+import javax.xml.bind.annotation.XmlEnum;
+
+@XmlEnum
+public enum DataXmlEnum {
+  GOOD,
+  MORNING;
+}
diff --git a/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/RestApplication.java b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/RestApplication.java
new file mode 100644
index 0000000..423d7cf
--- /dev/null
+++ b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/RestApplication.java
@@ -0,0 +1,8 @@
+package dk.jyskebank.tools.enunciate.modules.openapi.confignamespacewithprefix;
+
+import javax.ws.rs.ApplicationPath;
+import javax.ws.rs.core.Application;
+
+@ApplicationPath("rest")
+public class RestApplication extends Application {
+}
diff --git a/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/enunciate.xml b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/enunciate.xml
new file mode 100644
index 0000000..b363657
--- /dev/null
+++ b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/enunciate.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<enunciate version="version" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://enunciate.webcohesion.com/schemas/enunciate-2.11.1.xsd">
+
+	<namespaces>
+		<namespace uri="http://www.jyskebank.dk/enunciate/openapi/version/1" id="prefix-a"/>
+	</namespaces>
+
+	<modules disabledByDefault="true">
+		<openapi disabled="false" skipBase="false" />
+		<jaxrs groupBy="class" disabled="false" />
+		<jackson disabled="false" />
+		<jaxb disabled="false" />
+	</modules>
+</enunciate>
diff --git a/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/openapi.yml b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/openapi.yml
new file mode 100644
index 0000000..d83ae82
--- /dev/null
+++ b/src/test/java/dk/jyskebank/tools/enunciate/modules/openapi/confignamespacewithprefix/openapi.yml
@@ -0,0 +1,46 @@
+openapi: 3.0.0
+info:
+  title: "Web Service API"
+  version: "version"
+  description: ""
+servers: []
+paths:
+  "/path/xmldto":
+    get:
+      description: ""
+      tags:
+        - "DataResource"
+      summary: ""
+      deprecated: false
+      operationId: getXmlType
+      responses:
+        "200":
+          description: ""
+          content:
+            "*/*":
+              schema:
+                $ref: "#/components/schemas/xml_prefix-a_dataXmlDTO"
+ 
+components:
+  schemas:
+    "xml_ns0_dataXmlEnum":
+      title: "dataXmlEnum"
+      type: string
+      enum:
+      - "GOOD"
+      - "MORNING"
+    "xml_prefix-a_dataXmlDTO":
+      title: "dataXmlDTO"
+      allOf:
+      - type: string
+        format: binary
+      - type: object
+        properties:
+          "aString":
+            type: string
+          "anEnum":
+            $ref: "#/components/schemas/xml_ns0_dataXmlEnum"
+        xml:
+          name: dataXmlDTO
+          namespace: http://www.jyskebank.dk/enunciate/openapi/version/1
+          prefix: prefix-a