diff --git a/matrix-synapse.spec b/matrix-synapse.spec
index d998b96..9d1ae6a 100644
--- a/matrix-synapse.spec
+++ b/matrix-synapse.spec
@@ -56,7 +56,7 @@ install -p -D -m 0644 %{SOURCE3} %{buildroot}%{_sysusersdir}/%{name}.conf
 
 
 %check
-PYTHONPATH=. trial-3 tests
+PYTHONPATH=%{buildroot}%{python3_sitearch}:%{buildroot}%{python3_sitelib}:$PWD trial-3 tests
 
 
 %pre