diff --git a/ddebug/pserror.h b/ddebug/pserror.h
index e27aa6766..4daf644e9 100644
--- a/ddebug/pserror.h
+++ b/ddebug/pserror.h
@@ -228,24 +228,9 @@ static inline void SetDebugBreakHandlers(void (*stop)(), void (*resume)()) {
     }                                                                                                                  \
   } while (0)
 
-#if defined(WIN32)
-
-#define HEAPCHECK()                                                                                                    \
-  do {                                                                                                                 \
-    if (_heapchk() != _HEAPOK)                                                                                         \
-      Int3();                                                                                                          \
-  } while (0)
-
-#elif defined(POSIX)
-
-#define HEAPCHECK()
-
-#endif
-
 #else
 #define DEBUG_BREAK()
 #define ASSERT(x)
 #define Int3()
-#define HEAPCHECK()
 #endif
 #endif
diff --git a/netgames/includes/DMFC.h b/netgames/includes/DMFC.h
index e9066577c..be10f7305 100644
--- a/netgames/includes/DMFC.h
+++ b/netgames/includes/DMFC.h
@@ -332,20 +332,6 @@
 
 #define DLLmprintf(...) DLLDebug_ConsolePrintf(__VA_ARGS__)
 
-#if defined(WIN32)
-
-#define HEAPCHECK()                                                                                                    \
-  do {                                                                                                                 \
-    if (_heapchk() != _HEAPOK)                                                                                         \
-      Int3();                                                                                                          \
-  } while (0)
-
-#elif defined(POSIX)
-
-#define HEAPCHECK()
-
-#endif
-
 #else // Release build
 
 #ifdef DEBUG_BREAK