diff --git a/src/gallium/drivers/zink/ci/zink-radv-fails.txt b/src/gallium/drivers/zink/ci/zink-radv-fails.txt
index cb098272f94..763483a4a92 100644
--- a/src/gallium/drivers/zink/ci/zink-radv-fails.txt
+++ b/src/gallium/drivers/zink/ci/zink-radv-fails.txt
@@ -1,3 +1,4 @@
+# CTS bug, see https://gitlab.khronos.org/Tracker/vk-gl-cts/-/issues/4108
 dEQP-GLES3.functional.shaders.texture_functions.textureprojlodoffset.sampler2dshadow_vertex,Fail
 dEQP-GLES3.functional.shaders.texture_functions.textureprojoffset.sampler2dshadow_vertex,Fail