diff --git a/source/ff.c b/source/ff.c
index c19a6e0..1d4e5ff 100644
--- a/source/ff.c
+++ b/source/ff.c
@@ -5058,7 +5058,7 @@ 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 FF_FS_EXFAT
 	if (fs->fs_type == FS_EXFAT) {	/* On the exFAT volume */