diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index 5cd1f42e2..0fcee3eec 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -469,7 +469,7 @@ private:
   cmTarget* Target;
   cmGeneratorTarget* GeneratorTarget;
   cmMakefile* Makefile;
-  cmGlobalGenerator* GlobalGenerator;
+  cmGlobalGenerator const* GlobalGenerator;
   typedef cmGeneratorTarget::SourceEntry SourceEntry;
   SourceEntry* CurrentEntry;
   std::queue<cmSourceFile*> SourceQueue;
diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index 17a223a41..a4caba1df 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -50,7 +50,7 @@ public:
   cmTarget* Target;
   cmMakefile* Makefile;
   cmLocalGenerator* LocalGenerator;
-  cmGlobalGenerator* GlobalGenerator;
+  cmGlobalGenerator const* GlobalGenerator;
 
   std::string ModuleDefinitionFile;