diff --git a/intern/moto/include/MT_assert.h b/intern/moto/include/MT_assert.h
index b9680c1e684..bff85c4074f 100644
--- a/intern/moto/include/MT_assert.h
+++ b/intern/moto/include/MT_assert.h
@@ -32,17 +32,17 @@
 #ifndef MT_ASSERT_H
 #define MT_ASSERT_H
 
-#ifdef	MT_NDEBUG
-
-#define MT_assert(predicate) ((void)0)
-
-#else 
+#ifdef	MT_DEBUG
 
 #include <assert.h>
 
 #define MT_assert(predicate) assert(predicate)
 
-#endif /* MT_NDEBUG */
+#else 
+
+#define MT_assert(predicate) ((void)0)
+
+#endif /* MT_DEBUG */
 
 #endif