diff --git a/Reconstruction/egamma/egammaValidation/src/EgammaMonitoring.cxx b/Reconstruction/egamma/egammaValidation/src/EgammaMonitoring.cxx
index 6166228c4ae0b2be082f7c532eb4342bd40a9f35..21e0eb02748acebc61cdafbfaea6eb751d015f71 100644
--- a/Reconstruction/egamma/egammaValidation/src/EgammaMonitoring.cxx
+++ b/Reconstruction/egamma/egammaValidation/src/EgammaMonitoring.cxx
@@ -596,7 +596,7 @@ StatusCode EgammaMonitoring::finalize() {
     egammaMonitoring::EfficiencyPlot truthPhotonConvRecoUnconvEfficiency("truthPhotonConvRecoUnconvEfficiency", "/MONITORING/truthPhotonConvRecoUnconvEfficiency/", rootHistSvc );
     ATH_CHECK(truthPhotonConvRecoUnconvEfficiency.divide(truthPhotonConvRecoUnconv, truthPhotonConvPhoton));
     egammaMonitoring::EfficiencyPlot truthPhotonUnconvRecoUnconvEfficiency("truthPhotonUnconvRecoUnconvEfficiency", "/MONITORING/truthPhotonUnconvRecoUnconvEfficiency/", rootHistSvc );
-    ATH_CHECK(truthPhotonConvRecoUnconvEfficiency.divide(truthPhotonUnconvRecoUnconv, truthPhotonUnconvPhoton));
+    ATH_CHECK(truthPhotonUnconvRecoUnconvEfficiency.divide(truthPhotonUnconvRecoUnconv, truthPhotonUnconvPhoton));
     egammaMonitoring::EfficiencyPlot truthPhotonRecoConvEfficiency("truthPhotonRecoConvEfficiency", "/MONITORING/truthPhotonRecoConvEfficiency/", rootHistSvc );
     ATH_CHECK(truthPhotonRecoConvEfficiency.divide(truthPhotonConvRecoConv, truthPhotonRecoPhoton));
     egammaMonitoring::EfficiencyPlot truthPhotonRecoUnconvEfficiency("truthPhotonRecoUnconvEfficiency", "/MONITORING/truthPhotonRecoUnconvEfficiency/", rootHistSvc );