diff --git a/debian/rules b/debian/rules
index 586fa1098..14e8cecc1 100755
--- a/debian/rules
+++ b/debian/rules
@@ -17,6 +17,8 @@ DEBIAN  := $(shell dpkg-parsechangelog | grep ^Version: | cut -d' ' -f2)
 DEBVERS := $(shell echo '$(DEBIAN)' | cut -d- -f1)
 VERSION := $(shell echo '$(DEBVERS)' | sed -e 's/[+-].*//' -e 's/~//g')
 
+export DEB_BUILD_HARDENING=1
+
 %:
 	dh --sourcedirectory=openbsc --with autoreconf $@