diff --git a/debian/rules b/debian/rules
index 5bbdcf6..b85d0fe 100755
--- a/debian/rules
+++ b/debian/rules
@@ -2,6 +2,7 @@
 
 export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+export DPKG_GENSYMBOLS_CHECK_LEVEL = 2
 
 %:
 	dh $@ --with=gir