diff --git a/include/aiDefs.h b/include/aiDefs.h
deleted file mode 100644
index 22efe89cb..000000000
--- a/include/aiDefs.h
+++ /dev/null
@@ -1,23 +0,0 @@
-
-
-/** @file Helper macros for the library 
- */
-#ifndef AI_DEF_H_INC
-#define AI_DEF_H_INC
-
-
-/** Namespace helper macros for c++ compilers
- */
-#ifdef __cplusplus
-  #define AI_NAMESPACE_START namespace Assimp {
-  #define AI_NAMESPACE_END };
-#else
-  #define AI_NAMESPACE_START
-  #define AI_NAMESPACE_END
-#endif
-
-#ifdef _DEBUG
-#  define ASSIMP_DEBUG
-#endif
-
-#endif //!!AI_DEF_H_INC