diff --git a/engines/kyra/kyra_v1.cpp b/engines/kyra/kyra_v1.cpp
index 2c002585c52..8df059db0d1 100644
--- a/engines/kyra/kyra_v1.cpp
+++ b/engines/kyra/kyra_v1.cpp
@@ -413,6 +413,9 @@ void KyraEngine_v1::updateInput() {
 		}
 	}
 
+	// TODO: Check whether we should really call Screen::updateScreen here.
+	// We might simply want to call OSystem::updateScreen instead, since Screen::updateScreen
+	// copies changed screen parts to the screen buffer, which might not be desired.
 	if (updateScreen)
 		screen()->updateScreen();
 }