diff --git a/src/asahi/lib/agx_nir_prolog_epilog.c b/src/asahi/lib/agx_nir_prolog_epilog.c
index 99a4bcb6a01..fcd3e442cfe 100644
--- a/src/asahi/lib/agx_nir_prolog_epilog.c
+++ b/src/asahi/lib/agx_nir_prolog_epilog.c
@@ -448,16 +448,17 @@ agx_nir_fs_epilog(nir_builder *b, const void *key_)
     * to the epilog, when sample shading is not used but blending is.
     */
    if (key->link.sample_shading) {
-      NIR_PASS(_, b->shader, agx_nir_lower_to_per_sample);
-      NIR_PASS(_, b->shader, agx_nir_lower_fs_active_samples_to_register);
-
       /* Lower the resulting discards. Done in agx_nir_lower_monolithic_msaa for
-       * the pixel shaded path.
+       * the pixel shaded path. Must be done before agx_nir_lower_to_per_sample
+       * to avoid duplicating tests.
        */
       if (key->blend.alpha_to_coverage) {
          NIR_PASS(_, b->shader, agx_nir_lower_sample_mask);
       }
 
+      NIR_PASS(_, b->shader, agx_nir_lower_to_per_sample);
+      NIR_PASS(_, b->shader, agx_nir_lower_fs_active_samples_to_register);
+
       /* Ensure the sample ID is preserved in register. We do this late since it
        * has to go in the last block, and the above passes might add control
        * flow when lowering.