diff --git a/source/core/gameinput.h b/source/core/gameinput.h
index 777f38e6d..8132d6e31 100644
--- a/source/core/gameinput.h
+++ b/source/core/gameinput.h
@@ -164,7 +164,7 @@ struct PlayerAngle
 
 	binangle interpolatedsum(double const smoothratio)
 	{
-		double const ratio = smoothratio / FRACUNIT;
+		double const ratio = smoothratio * (1. / FRACUNIT);
 		uint32_t const dang = UINT32_MAX >> 1;
 		int64_t const prev = oang.asbam() + olook_ang.asbam();
 		int64_t const curr = ang.asbam() + look_ang.asbam();