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-rw-r--r--tests/phpunit/includes/api/PrefixUniquenessTest.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/phpunit/includes/api/PrefixUniquenessTest.php b/tests/phpunit/includes/api/PrefixUniquenessTest.php
index 13da33c7..d04766be 100644
--- a/tests/phpunit/includes/api/PrefixUniquenessTest.php
+++ b/tests/phpunit/includes/api/PrefixUniquenessTest.php
@@ -20,7 +20,7 @@ class PrefixUniquenessTest extends MediaWikiTestCase {
$class = get_class( $module );
$prefix = $module->getModulePrefix();
- if ( isset( $prefixes[$prefix] ) ) {
+ if ( $prefix !== '' && isset( $prefixes[$prefix] ) ) {
$this->fail( "Module prefix '{$prefix}' is shared between {$class} and {$prefixes[$prefix]}" );
}
$prefixes[$module->getModulePrefix()] = $class;