diff --git a/src/gba/gui/gui-runner.c b/src/gba/gui/gui-runner.c
index 37fdf62a3..3de451857 100644
--- a/src/gba/gui/gui-runner.c
+++ b/src/gba/gui/gui-runner.c
@@ -109,6 +109,9 @@ void GBAGUIDeinit(struct GBAGUIRunner* runner) {
 	if (runner->teardown) {
 		runner->teardown(runner);
 	}
+	if (runner->context.config.port) {
+		GBAConfigSave(&runner->context.config);
+	}
 	GBAContextDeinit(&runner->context);
 }