diff --git a/tests/ConceptTest.php b/tests/ConceptTest.php
index 5921ea9ff..f85cbcae0 100644
--- a/tests/ConceptTest.php
+++ b/tests/ConceptTest.php
@@ -110,6 +110,9 @@ public function testSetFoundBy()
      */
     public function testGetForeignLabels()
     {
+        # make sure UK English collation is being used as the default
+        setlocale(LC_ALL, "en_GB.utf8");
+
         $labels = $this->concept->getForeignLabels();
 
         $this->assertEquals('Karppi', $labels['Finnish']['prefLabel'][0]->getLabel());