diff --git a/src/effects/Equalization.cpp b/src/effects/Equalization.cpp
index 87e995c52..1a544204d 100644
--- a/src/effects/Equalization.cpp
+++ b/src/effects/Equalization.cpp
@@ -2486,6 +2486,7 @@ void EqualizationDialog::ErrMin(void)
    testEnvelope = new Envelope();
    testEnvelope->SetInterpolateDB(false);
    testEnvelope->Mirror(false);
+   testEnvelope->SetRange(-120.0, 60.0);
    testEnvelope->Flatten(0.);
    testEnvelope->SetTrackLen(1.0);
    testEnvelope->CopyFrom(mLogEnvelope, 0.0, 1.0);