diff --git a/sbin/restore/main.c b/sbin/restore/main.c
index 91f4a83c729..d74e59ebeef 100644
--- a/sbin/restore/main.c
+++ b/sbin/restore/main.c
@@ -366,7 +366,8 @@ obsolete(int *argcp, char **argvp[])
 	if (flags) {
 		*p = '\0';
 		*nargv++ = flagsp;
-	}
+	} else
+		free(flagsp);
 
 	/* Copy remaining arguments. */
 	while ((*nargv++ = *argv++));