diff --git a/hugolib/testhelpers_test.go b/hugolib/testhelpers_test.go
index 137dbd701..8ecff189a 100644
--- a/hugolib/testhelpers_test.go
+++ b/hugolib/testhelpers_test.go
@@ -1021,7 +1021,7 @@ func printStringIndexes(s string) {
 }
 
 func isCI() bool {
-	return os.Getenv("CI") != ""
+	return os.Getenv("CI") != "" && os.Getenv("CIRCLE_BRANCH") == ""
 }
 
 // See https://github.com/golang/go/issues/19280