Index: tests/server/ui/V4Pages.py
===================================================================
--- tests/server/ui/V4Pages.py
+++ tests/server/ui/V4Pages.py
@@ -638,7 +638,8 @@
     check_json(client, '/db_default/v4/nts/graph?switch_min_mean=yes&plot.0=1.3.2&json=true')
     app.testing = False
     error_page = check_html(client, '/explode', expected_code=500)
-    assert "integer division or modulo by zero" in error_page.get_data(as_text=True)
+    assert re.search("division (or modulo )?by zero",
+                     error_page.get_data(as_text=True))
 
     error_page = check_html(client, '/gone', expected_code=404)
     assert "test" in error_page.get_data(as_text=True)