diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 5ddaf8625d3b..881b3bd0143f 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -247,7 +247,7 @@ static int isofs_dentry_cmp_common(
 	}
 	if (alen == blen) {
 		if (ci) {
-			if (strnicmp(name->name, str, alen) == 0)
+			if (strncasecmp(name->name, str, alen) == 0)
 				return 0;
 		} else {
 			if (strncmp(name->name, str, alen) == 0)