diff --git a/mm/kmm_heap/kmm_mallinfo.c b/mm/kmm_heap/kmm_mallinfo.c
index c1da8141a6..fbd654c0fd 100644
--- a/mm/kmm_heap/kmm_mallinfo.c
+++ b/mm/kmm_heap/kmm_mallinfo.c
@@ -24,7 +24,7 @@
 
 #include <nuttx/config.h>
 
-#include <stdlib.h>
+#include <malloc.h>
 
 #include <nuttx/mm/mm.h>