diff --git a/Makefile b/Makefile
index 0c2fd44..761018f 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ endif
 CXXFLAGS=$(shell geant4-config --cflags)
 LDLIBS=$(shell geant4-config --libs)
 # fix cxxflags for Geant4.10.7.0
-CXXFLAGS+=$(shell geant4-config --cflags |awk '{print $$NF}'|sed 's|Geant4||')
+CXXFLAGS+=$(shell geant4-config --cflags |awk '{print $$NF}'|sed 's|de/Geant4|de|')
 CXXFLAGS+=-Wno-shadow
 
 # In case that GDML and HDF5 libs are in user specified folders,