diff --git a/source/gameengine/Expressions/PyObjectPlus.cpp b/source/gameengine/Expressions/PyObjectPlus.cpp
index 84d6a1cba4b..e205ddfda2e 100644
--- a/source/gameengine/Expressions/PyObjectPlus.cpp
+++ b/source/gameengine/Expressions/PyObjectPlus.cpp
@@ -1122,7 +1122,9 @@ PyObject *PyObjectPlus::GetProxyPlus_Ext(PyObjectPlus *self, PyTypeObject *tp, v
 		self->m_proxy = reinterpret_cast<PyObject *>PyObject_NEW( PyObjectPlus_Proxy, tp);
 		BGE_PROXY_PYOWNS(self->m_proxy) = false;
 		BGE_PROXY_PYREF(self->m_proxy) = true;
+#ifdef USE_WEAKREFS
 		BGE_PROXY_WKREF(self->m_proxy) = NULL;
+#endif
 	}
 	//PyObject_Print(self->m_proxy, stdout, 0);
 	//printf("ref %d\n", self->m_proxy->ob_refcnt);
@@ -1143,7 +1145,9 @@ PyObject *PyObjectPlus::NewProxyPlus_Ext(PyObjectPlus *self, PyTypeObject *tp, v
 		BGE_PROXY_PYOWNS(proxy) = py_owns;
 		BGE_PROXY_REF(proxy) = NULL; 
 		BGE_PROXY_PTR(proxy) = ptr;
+#ifdef USE_WEAKREFS
 		BGE_PROXY_WKREF(self->m_proxy) = NULL;
+#endif
 		return proxy;
 	}
 	if (self->m_proxy)
diff --git a/source/gameengine/Expressions/PyObjectPlus.h b/source/gameengine/Expressions/PyObjectPlus.h
index 315a328317d..7d06cc64ee9 100644
--- a/source/gameengine/Expressions/PyObjectPlus.h
+++ b/source/gameengine/Expressions/PyObjectPlus.h
@@ -108,7 +108,9 @@ typedef struct PyObjectPlus_Proxy {
 #define BGE_PROXY_PTR(_self) (((PyObjectPlus_Proxy *)_self)->ptr)
 #define BGE_PROXY_PYOWNS(_self) (((PyObjectPlus_Proxy *)_self)->py_owns)
 #define BGE_PROXY_PYREF(_self) (((PyObjectPlus_Proxy *)_self)->py_ref)
-#define BGE_PROXY_WKREF(_self) (((PyObjectPlus_Proxy *)_self)->in_weakreflist)
+#ifdef USE_WEAKREFS
+	#define BGE_PROXY_WKREF(_self) (((PyObjectPlus_Proxy *)_self)->in_weakreflist)
+#endif
 
 /* Note, sometimes we dont care what BGE type this is as long as its a proxy */
 #define BGE_PROXY_CHECK_TYPE(_type) ((_type)->tp_dealloc == PyObjectPlus::py_base_dealloc)