diff --git a/fs/mmap/fs_rammap.c b/fs/mmap/fs_rammap.c
index 7f31ba5b61..c011d2a943 100644
--- a/fs/mmap/fs_rammap.c
+++ b/fs/mmap/fs_rammap.c
@@ -29,6 +29,7 @@
 #include <assert.h>
 #include <debug.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <string.h>
 #include <unistd.h>