diff --git a/source/core/gameinput.h b/source/core/gameinput.h
index 193ff6713..dd7ad05fc 100644
--- a/source/core/gameinput.h
+++ b/source/core/gameinput.h
@@ -6,14 +6,9 @@
 #include "gamestruct.h"
 #include "packet.h"
 
-inline constexpr binangle getincanglebam(binangle a, binangle na)
-{
-	return na-a;
-}
-
 inline constexpr int getincangle(int a, int na)
 {
-	return getincanglebam(buildang(a), buildang(na)).signedbuild();
+	return int(unsigned(na << 21) - unsigned(a << 21)) >> 21;
 }
 
 struct PlayerHorizon