diff --git a/src/include/mhd_options.h b/src/include/mhd_options.h
index e405fd23..a4cc0a36 100644
--- a/src/include/mhd_options.h
+++ b/src/include/mhd_options.h
@@ -158,7 +158,6 @@
 /* Manual ASAN poisoning could be used */
 #warning User memory poisoning is not active
 #endif /* ! MHD_ASAN_POISON_ACTIVE */
-#define _MHD_USE_ASAN_POISON 1
 #else  /* ! (MHD_ASAN_ACTIVE && HAVE_SANITIZER_ASAN_INTERFACE_H &&
            (FUNC_ATTR_PTRCOMPARE_WOKRS || FUNC_ATTR_NOSANITIZE_WORKS))   */
 #ifdef MHD_ASAN_POISON_ACTIVE
diff --git a/src/microhttpd/memorypool.c b/src/microhttpd/memorypool.c
index f963031e..4002e59e 100644
--- a/src/microhttpd/memorypool.c
+++ b/src/microhttpd/memorypool.c
@@ -72,7 +72,7 @@
 
 #ifdef MHD_ASAN_POISON_ACTIVE
 #include <sanitizer/asan_interface.h>
-#endif /* _MHD_USE_ASAN_POISON */
+#endif /* MHD_ASAN_POISON_ACTIVE */
 
 /* define MAP_ANONYMOUS for Mac OS X */
 #if defined(MAP_ANON) && ! defined(MAP_ANONYMOUS)
@@ -304,7 +304,7 @@ MHD_pool_get_free (struct MemoryPool *pool)
 #ifdef MHD_ASAN_POISON_ACTIVE
   if ((pool->end - pool->pos) <= _MHD_RED_ZONE_SIZE)
     return 0;
-#endif /* _MHD_USE_ASAN_POISON */
+#endif /* MHD_ASAN_POISON_ACTIVE */
   return (pool->end - pool->pos) - _MHD_RED_ZONE_SIZE;
 }