diff --git a/Source/Core/Core/HW/GCPadEmu.cpp b/Source/Core/Core/HW/GCPadEmu.cpp
index b6ed46d0b7..2619cacf15 100644
--- a/Source/Core/Core/HW/GCPadEmu.cpp
+++ b/Source/Core/Core/HW/GCPadEmu.cpp
@@ -122,11 +122,8 @@ void GCPad::GetInput(GCPadStatus* const pad)
 
 void GCPad::SetMotor(const u8 on)
 {
-	ControlState state = static_cast<ControlState>(on) / 255;
-	ControlState force = abs(state - 0.5) * 2;
-	if (state < 0.5)
-		force = -force;
-
+	// map 0..255 to -1.0..1.0
+	ControlState force = on / 127.5 - 1;
 	m_rumble->controls[0]->control_ref->State(force);
 }