diff --git a/client/inc/c64keycodes.i b/client/inc/c64keycodes.i
index 33cc14f..d18c668 100644
--- a/client/inc/c64keycodes.i
+++ b/client/inc/c64keycodes.i
@@ -3,3 +3,12 @@ KEYCODE_DOWN=$11
 KEYCODE_UP=$91
 KEYCODE_LEFT=$9d
 KEYCODE_RIGHT=$1d
+KEYCODE_F1=$85
+KEYCODE_F2=$89
+KEYCODE_F3=$86
+KEYCODE_F4=$8a
+KEYCODE_F5=$87
+KEYCODE_F6=$8b
+KEYCODE_F7=$88
+KEYCODE_F8=$8c
+