diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9b4e5a7..0be2320 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -209,12 +209,6 @@ ELSE(PHYSFS_HAVE_THREAD_SUPPORT)
     MESSAGE(WARNING " ***")
 ENDIF(PHYSFS_HAVE_THREAD_SUPPORT)
 
-CHECK_INCLUDE_FILE(assert.h HAVE_ASSERT_H)
-IF(HAVE_ASSERT_H)
-    ADD_DEFINITIONS(-DHAVE_ASSERT_H=1)
-ENDIF(HAVE_ASSERT_H)
-
-
 
 # Archivers ...
 
diff --git a/src/physfs_internal.h b/src/physfs_internal.h
index 829e37e..27082e7 100644
--- a/src/physfs_internal.h
+++ b/src/physfs_internal.h
@@ -23,11 +23,7 @@
 
 #include "physfs_platforms.h"
 
-#ifdef HAVE_ASSERT_H
 #include <assert.h>
-#elif (!defined assert)
-#define assert(x)
-#endif
 
 /* !!! FIXME: remove this when revamping stack allocation code... */
 #if defined(_MSC_VER) || defined(__MINGW32__)