diff --git a/vl.c b/vl.c
index 1d4c089..3893c84 100644
--- a/vl.c
+++ b/vl.c
@@ -4312,8 +4312,9 @@
     /* init remote displays */
     qemu_opts_foreach(qemu_find_opts("vnc"), vnc_init_func, NULL, 0);
     if (show_vnc_port) {
-        printf("VNC server running on `%s'\n",
-               vnc_display_local_addr("default"));
+        char *ret = vnc_display_local_addr("default");
+        printf("VNC server running on `%s'\n", ret);
+        g_free(ret);
     }
 #endif
 #ifdef CONFIG_SPICE