diff --git a/pico/draw2.c b/pico/draw2.c
index 1f9d3e0c..80bfd855 100644
--- a/pico/draw2.c
+++ b/pico/draw2.c
@@ -607,7 +607,7 @@ static void DrawDisplayFull(void)
 }
 
 
-PICO_INTERNAL void PicoFrameFull()
+PICO_INTERNAL void PicoFrameFull(void)
 {
 	pprof_start(draw);