diff --git a/src/mod/applications/mod_mongo/Makefile b/src/mod/applications/mod_mongo/Makefile
index cdab0466be..9ce16b1171 100644
--- a/src/mod/applications/mod_mongo/Makefile
+++ b/src/mod/applications/mod_mongo/Makefile
@@ -25,8 +25,8 @@ $(MONGO_CXX_DRIVER_SRC):
 
 $(LIBMONGOCLIENT_A): $(MONGO_CXX_DRIVER_SRC)
 	(cd $(MONGO_CXX_DRIVER_SRC) && \
-		sed -i SConstruct -e "s/Environment()/Environment(ENV = {'PATH' : os.environ['PATH'],'CFLAGS' : os.environ['CFLAGS'],'CXXFLAGS' : os.environ['CXXFLAGS']})/" && \
-		echo "env.Append(PATH=os.environ['PATH'])" >> SConstruct && \
+		sed -i SConstruct -e "s|Environment()|Environment(ENV = {'PATH' : os.environ.get('PATH','/bin:/usr/bin'),'CFLAGS' : os.environ.get('CFLAGS',''),'CXXFLAGS' : os.environ.get('CXXFLAGS','')})|" && \
+		echo "env.Append(PATH=os.environ.get('PATH','/bin:/usr/bin'))" >> SConstruct && \
 		scons)
 	$(TOUCH_TARGET)