diff --git a/macros/CCEScan/voltageFit_spline.C b/macros/CCEScan/voltageFit_spline.C
index 8b5ba12..fad064b 100755
--- a/macros/CCEScan/voltageFit_spline.C
+++ b/macros/CCEScan/voltageFit_spline.C
@@ -471,7 +471,7 @@
     maxX = 250.0;
   }
   
-  maxY = 100.0;  // 50.0;
+  double maxY = 100.0;  // 50.0;
 
   mg_volt->Draw("A");
   mg_volt->GetXaxis()->SetLimits(0.0,maxX);