diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index c25cadf8f8c4a5d58bf02bce527939c7875e5474..2e7e8c878e5d157418e91a3ce742b8810168c5d3 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1152,7 +1152,7 @@ static int nfs_get_option_str(substring_t args[], char **option)
 {
 	kfree(*option);
 	*option = match_strdup(args);
-	return !option;
+	return !*option;
 }
 
 static int nfs_get_option_ul(substring_t args[], unsigned long *option)