diff --git a/src/system/libroot/posix/malloc/config.h b/src/system/libroot/posix/malloc/config.h
index a4dc692d9a..018f4a8642 100644
--- a/src/system/libroot/posix/malloc/config.h
+++ b/src/system/libroot/posix/malloc/config.h
@@ -63,8 +63,8 @@ enum { SUPERBLOCK_FULLNESS_GROUP = 9 };
 #define HEAP_CALL_STACK_SIZE 8
 
 // A simple wall checker
-#define HEAP_WALL 1
-#define HEAP_WALL_SIZE 64
+#define HEAP_WALL 0
+#define HEAP_WALL_SIZE 32
 
 // CACHE_LINE = The number of bytes in a cache line.