diff --git a/main/cli.c b/main/cli.c
index ef3ce6d19e..d633f9cb6d 100644
--- a/main/cli.c
+++ b/main/cli.c
@@ -1289,7 +1289,9 @@ static char *complete_fn_3(const char *line, const char *word, int pos, int stat
 		c += (strlen(ast_config_AST_MODULE_DIR) + 1);
 	if (c)
 		c = strdup(c);
-	free(d);
+	if (d) {
+		free(d);
+	}
 	
 	return c;
 }