diff --git a/source/core/inputstate.cpp b/source/core/inputstate.cpp
index 4acce4813..c0b55dec5 100644
--- a/source/core/inputstate.cpp
+++ b/source/core/inputstate.cpp
@@ -489,7 +489,7 @@ double InputScale()
 		// on this fractional scale to increase by over 100 ms as the framerate increases.
 		// This isn't pretty, but it's accurate to within 1-2 ms from 60 fps to at least 1000 fps.
 		const double result = elapsedInputTicks * GameTicRate / 1000.;
-		const double scaler = cl_preciseinputscaling ? 1. + InputScalePercentage * (1. + result - result * 2.) : 1.;
+		const double scaler = cl_preciseinputscaling ? 1. + InputScalePercentage * (1. - result) : 1.;
 		return result * scaler;
 	}
 	else