diff --git a/debian/rules b/debian/rules
index e89dd0a..eb05a4e 100755
--- a/debian/rules
+++ b/debian/rules
@@ -3,7 +3,7 @@
 #export DH_VERBOSE = 1
 
 export PYBUILD_NAME=pypsrp
-export PYBUILD_TEST_ARGS="-k-test_build_session_proxies_default -k-test_build_session_proxies_env"
+export PYBUILD_TEST_ARGS=-k 'not test_build_session_proxies_default and not test_build_session_proxies_env'
 
 %:
 	dh $@ --with python3 --buildsystem=pybuild