diff --git a/renderdoc/data/glsl/checkerboard.frag b/renderdoc/data/glsl/checkerboard.frag
index 89d810a65..4f0adf589 100644
--- a/renderdoc/data/glsl/checkerboard.frag
+++ b/renderdoc/data/glsl/checkerboard.frag
@@ -22,6 +22,9 @@
  * THE SOFTWARE.
  ******************************************************************************/
 
+// for GLES compatibility where we must match blit.vert
+layout (location = 0) in vec2 uv;
+
 layout (location = 0) out vec4 color_out;
 
 layout (binding = 0, std140) uniform checkeruniforms