diff --git a/python-elephant.spec b/python-elephant.spec
index 306d78d..e9d9caa 100644
--- a/python-elephant.spec
+++ b/python-elephant.spec
@@ -121,9 +121,7 @@ k="${k:-}${k:+ and }not test_pairwise_spectral_granger"
 k="${k:-}${k:+ and }not test_sttc_validation_test"
 %endif
 
-# serial
-# MPI tests hang in mock and builders, not sure why, so we skip them for the moment
-%pytest -v -k "${k} and not test_parallel"
+%pytest -v ${k+-k }"${k-}"
 
 
 %files -n python3-elephant -f %{pyproject_files}