diff --git a/modules/NightDemonDemo/NightDemonDemo.c b/modules/NightDemonDemo/NightDemonDemo.c
index 80c6d36..8c43f96 100644
--- a/modules/NightDemonDemo/NightDemonDemo.c
+++ b/modules/NightDemonDemo/NightDemonDemo.c
@@ -73,6 +73,7 @@ static void ndd_run(int demonum) {
 			if (sys_keywait(wait_ms, KEYWAIT_CANCELABLE))
 				break;
 		} else {
+			sdl_updateScreen();
 			if (sys_getInputInfo())
 				break;
 		}
diff --git a/modules/tDemo/tDemo.c b/modules/tDemo/tDemo.c
index c127e9c..e18ad04 100644
--- a/modules/tDemo/tDemo.c
+++ b/modules/tDemo/tDemo.c
@@ -93,6 +93,7 @@ static void Run() {
 			if (sys_keywait(wait_ms, KEYWAIT_CANCELABLE))
 				break;
 		} else {
+			sdl_updateScreen();
 			if (sys_getInputInfo())
 				break;
 		}