diff --git a/tests/Layer/UTFGrid.html b/tests/Layer/UTFGrid.html
index 08ff16d422..f90403e6f0 100644
--- a/tests/Layer/UTFGrid.html
+++ b/tests/Layer/UTFGrid.html
@@ -68,6 +68,8 @@
         got = layer.createBackBuffer();
       } catch (e) {
         got = e;
+      } finally {
+        tearDown();
       }
       t.eq(got, undefined, "createBackBuffer returns undefined");
     }