diff --git a/geant4/LEMuSR/GNUmakefile b/geant4/LEMuSR/GNUmakefile
index ab55435..d262571 100644
--- a/geant4/LEMuSR/GNUmakefile
+++ b/geant4/LEMuSR/GNUmakefile
@@ -69,3 +69,7 @@ endif
 ifdef LEMU_GET_NEWMAPS
 CPPFLAGS += -DLEMU_GET_NEWMAPS
 endif
+
+ifdef LEMU_TRANSVERSE_FIELD
+CPPFLAGS += -DLEMU_TRANSVERSE_FIELD
+endif
diff --git a/geant4/LEMuSR/make.sh b/geant4/LEMuSR/make.sh
index 8420350..56a90f8 100644
--- a/geant4/LEMuSR/make.sh
+++ b/geant4/LEMuSR/make.sh
@@ -1,10 +1,10 @@
-#cd ~/geant4.7.0/source/particles/management 
+#cd ~/geant4.7.1/source/particles/management 
 #gmake
-#cd ~/geant4.7.0/source/particles/leptons 
+#cd ~/geant4.7.1/source/particles/leptons 
 #gmake
-cd ~/geant4.7.0/source/geometry/magneticfield/
+cd ~/geant4.7.1/source/processes/transportation/
 gmake
-#cd ~/geant4.7.0/source/geometry/navigation/
+#cd ~/geant4.7.1/source/geometry/navigation/
 #gmake
 cd $wlem 
 gmake