diff --git a/lib/oofatfs/ff.c b/lib/oofatfs/ff.c
index fca6c4f87d68894f3023adb20c4072f3033d42fa..346f3df97097a10db96f69c3b604271341f3d00b 100644
--- a/lib/oofatfs/ff.c
+++ b/lib/oofatfs/ff.c
@@ -4803,7 +4803,7 @@ FRESULT f_setlabel (
     dj.obj.fs = fs;
 
     /* Get length of given volume label */
-    for (slen = 0; (UINT)label[slen] >= ' '; slen++) ;  /* Get name length */
+    for (slen = 0; (UINT)label[slen] >= ' '; slen++) { } /* Get name length */
 
 #if _FS_EXFAT
     if (fs->fs_type == FS_EXFAT) {  /* On the exFAT volume */