diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index f8b05a04c..d0410850c 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -6,7 +6,6 @@ OPTION(BUILD_DEVEL "Install/package files required for development (For SDK)." O
 OPTION(BUILD_DOXYGEN "Create/install/package doxygen documentation for DFHack (For SDK)." OFF)
 IF(UNIX)
     OPTION(CONSOLE_NO_CATCH "Make the console not catch 'CTRL+C' events for easier debugging." OFF)
-    OPTION(MALLOC_FILL "Make malloc calls fill the allocated memory with 0xCC values." OFF)
 ENDIF()
 
 include_directories (include)
@@ -216,9 +215,6 @@ IF(UNIX)
     IF(CONSOLE_NO_CATCH)
         ADD_DEFINITIONS(-DCONSOLE_NO_CATCH)
     ENDIF()
-    IF(MALLOC_FILL)
-        ADD_DEFINITIONS(-DMALLOC_FILL)
-    ENDIF()
 ENDIF()
 
 IF(UNIX)
diff --git a/library/Hooks-linux.cpp b/library/Hooks-linux.cpp
index aeb719b84..3628aab63 100644
--- a/library/Hooks-linux.cpp
+++ b/library/Hooks-linux.cpp
@@ -141,24 +141,3 @@ DFhackCExport int SDL_Init(uint32_t flags)
     int ret = _SDL_Init(flags);
     return ret;
 }
-
-#ifdef MALLOC_FILL
-DFhackCExport void * malloc(size_t size)
-{
-    static void* (*real_malloc)(size_t) = NULL;
-    if (!real_malloc)
-        real_malloc = (void * (*)( size_t )) dlsym(RTLD_NEXT, "malloc");
-    // check if we got them
-    if(!real_malloc)
-    {
-        // bail, this would be a disaster otherwise
-        exit(1);
-    }
-    void * ret = real_malloc(size);
-    if(ret)
-    {
-        memset(ret, 0xCC, size);
-    }
-    return ret;
-}
-#endif