diff --git a/debian/rules b/debian/rules
index 9a54f73..dc90fcc 100755
--- a/debian/rules
+++ b/debian/rules
@@ -7,7 +7,7 @@ include /usr/share/dpkg/buildtools.mk
 	dh ${@}
 
 override_dh_auto_configure:
-	dh_auto_configure -- 'CXX=$(CXX) -g'
+	dh_auto_configure -- 'CXX=$(CXX) -g' CXXFLAGS="$(CXXFLAGS)"
 
 override_dh_auto_install:
 	dh_auto_install -- DESTDIR=$(CURDIR)/debian/tarlz