diff --git a/grails-plugin-testing/src/main/groovy/org/codehaus/groovy/grails/compiler/injection/test/TestMixinTransformation.java b/grails-plugin-testing/src/main/groovy/org/codehaus/groovy/grails/compiler/injection/test/TestMixinTransformation.java
index ccb36cc5310..3fd86263afa 100644
--- a/grails-plugin-testing/src/main/groovy/org/codehaus/groovy/grails/compiler/injection/test/TestMixinTransformation.java
+++ b/grails-plugin-testing/src/main/groovy/org/codehaus/groovy/grails/compiler/injection/test/TestMixinTransformation.java
@@ -195,7 +195,7 @@ protected void weaveMixinIntoClass(final ClassNode classNode, final ClassNode mi
 
         if (mixinFieldNode == null) return; // already woven
         
-        VariableExpression fieldReference = new VariableExpression(fieldName);
+        FieldExpression fieldReference = new FieldExpression(mixinFieldNode);
 
         ClassNode currentMixinClassNode = mixinClassNode; 
         while (!currentMixinClassNode.getName().equals(OBJECT_CLASS)) {