diff --git a/Makefile.am b/Makefile.am
index dce16fe8c8..e05f759bbc 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5329,7 +5329,7 @@ include Makefile.examples
 
 if WITH_PYTHON_BLACK
 check-python-black:
-	test "$$NMTST_SKIP_PYTHON_BLACK" != 1 && $(BLACK) --check $(top_srcdir) $(top_srcdir)/examples/python/gi/nm-wg-set
+	test "$$NMTST_SKIP_PYTHON_BLACK" == 1 || $(BLACK) --check $(top_srcdir) $(top_srcdir)/examples/python/gi/nm-wg-set
 check_local += check-python-black
 endif