diff --git a/tests/python-entrypoints.spec b/tests/python-entrypoints.spec
index bc0a024..aa6d2d9 100644
--- a/tests/python-entrypoints.spec
+++ b/tests/python-entrypoints.spec
@@ -42,8 +42,8 @@ Summary:        %{summary}
 
 %check
 # Internal check: Top level __pycache__ is never owned
-grep -vE '/__pycache__$' %{pyproject_files}
-grep -vE '/__pycache__/$' %{pyproject_files}
+! grep -E '/__pycache__$' %{pyproject_files}
+! grep -E '/__pycache__/$' %{pyproject_files}
 grep -F '/__pycache__/' %{pyproject_files}
 
 
diff --git a/tests/python-isort.spec b/tests/python-isort.spec
index e160b63..684a2fe 100644
--- a/tests/python-isort.spec
+++ b/tests/python-isort.spec
@@ -47,7 +47,7 @@ test -d %{buildroot}%{python3_sitelib}/%{modname}/
 test -d %{buildroot}%{python3_sitelib}/%{modname}-%{version}.dist-info/
 
 # Internal check that executables are not present when +auto was not used with %%pyproject_save_files
-grep -vF %{buildroot}%{_bindir}/%{modname} %{pyproject_files}
+! grep -F %{buildroot}%{_bindir}/%{modname} %{pyproject_files}
 
 
 %files -n python3-%{modname} -f %{pyproject_files}
diff --git a/tests/python-ldap.spec b/tests/python-ldap.spec
index 1aec33e..aafe0e2 100644
--- a/tests/python-ldap.spec
+++ b/tests/python-ldap.spec
@@ -64,14 +64,14 @@ test -f %{buildroot}%{python3_sitearch}/_ldap.cpython-*.so
 
 # Internal check: Unmatched modules are not supposed to be listed in %%{pyproject_files}
 # We'll list them explicitly
-grep -vF %{python3_sitearch}/ldif.py %{pyproject_files}
-grep -vF %{python3_sitearch}/__pycache__/ldif.cpython-%{python3_version_nodots}.pyc %{pyproject_files}
-grep -vF %{python3_sitearch}/__pycache__/ldif.cpython-%{python3_version_nodots}.opt-1.pyc %{pyproject_files}
-grep -vF %{python3_sitearch}/slapdtest/ %{pyproject_files}
+! grep -F %{python3_sitearch}/ldif.py %{pyproject_files}
+! grep -F %{python3_sitearch}/__pycache__/ldif.cpython-%{python3_version_nodots}.pyc %{pyproject_files}
+! grep -F %{python3_sitearch}/__pycache__/ldif.cpython-%{python3_version_nodots}.opt-1.pyc %{pyproject_files}
+! grep -F %{python3_sitearch}/slapdtest %{pyproject_files}
 
 # Internal check: Top level __pycache__ is never owned
-grep -vE '/__pycache__$' %{pyproject_files}
-grep -vE '/__pycache__/$' %{pyproject_files}
+! grep -E '/__pycache__$' %{pyproject_files}
+! grep -E '/__pycache__/$' %{pyproject_files}
 
 
 %files -n python3-ldap -f %{pyproject_files}