diff --git a/releases/v02-03/release-base.cfg b/releases/v02-03/release-base.cfg
index 65bb22aa..a621a4c1 100644
--- a/releases/v02-03/release-base.cfg
+++ b/releases/v02-03/release-base.cfg
@@ -119,8 +119,6 @@ geant4.envcmake["GEANT4_USE_SYSTEM_CLHEP"]='ON'
 geant4.envcmake["GEANT4_USE_OPENGL_X11"]='ON'
 geant4.envcmake["GEANT4_USE_QT"]='ON' # requires qt
 geant4.envcmake["GEANT4_BUILD_TLS_MODEL"]= 'global-dynamic'
-#geant4.envcmake["GEANT4_BUILD_CXXSTD"]='c++' + str(cxx_standard)
-geant4.envcmake["GEANT4_BUILD_CXXSTD"]=str(cxx_standard)
 geant4.envcmake["GEANT4_INSTALL_DATA_TIMEOUT"]='7200'
 
 #geant4.envcmake["QT_QMAKE_EXECUTABLE"]=/path/to/qmake