1 files changed, 2 insertions, 1 deletions
diff --git a/Alc/effects/distortion.cpp b/Alc/effects/distortion.cpp
index e54ae455..1b9c66fa 100644
--- a/Alc/effects/distortion.cpp
+++ b/Alc/effects/distortion.cpp
@@ -65,7 +65,8 @@ void ALdistortionState::update(const ALCcontext *context, const ALeffectslot *sl
     const ALCdevice *device{context->Device};
 
     /* Store waveshaper edge settings. */
-    const ALfloat edge{minf(std::sin(props->Distortion.Edge * F_PI_2), 0.99f)};
+    const ALfloat edge{
+        minf(std::sin(al::MathDefs<float>::Pi()*0.5f * props->Distortion.Edge), 0.99f)};
     mEdgeCoeff = 2.0f * edge / (1.0f-edge);
 
     ALfloat cutoff{props->Distortion.LowpassCutoff};