diff --git a/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/more/glsl/uniformOutOfBounds.html.ini b/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/more/glsl/uniformOutOfBounds.html.ini
index a4c47444af4..c2797480f56 100644
--- a/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/more/glsl/uniformOutOfBounds.html.ini
+++ b/tests/wpt/metadata/webgl/conformance-1.0.3/conformance/more/glsl/uniformOutOfBounds.html.ini
@@ -1,2 +1,3 @@
 [uniformOutOfBounds.html]
+  type: testharness
   disabled: https://github.com/servo/servo/issues/13662