diff --git a/Bonsai.Vision/Normalize.cs b/Bonsai.Vision/Normalize.cs
index 111da4d20..b8184a062 100644
--- a/Bonsai.Vision/Normalize.cs
+++ b/Bonsai.Vision/Normalize.cs
@@ -30,7 +30,7 @@ public override IObservable<IplImage> Process(IObservable<IplImage> source)
 
                 var range = max - min;
                 var scale = range > 0 ? 1.0 / range : 0;
-                var shift = range > 0 ? -min : 0;
+                var shift = range > 0 ? -min * scale : 0;
                 CV.ConvertScale(input, output, scale, shift);
                 return output;
             });