diff --git a/src/i_video.c b/src/i_video.c
index 83627be4f..f33de0fe4 100644
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -817,7 +817,7 @@ void I_FinishUpdate(void)
 
     if (use_limiter)
     {
-        I_WaitUntil(1000000ull / targetrefresh);
+        I_WaitUntil(1000000u / targetrefresh);
     }
     else
     {