diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp
index 0eefc5fd7b6..92d038a4ea6 100644
--- a/src/intel/compiler/brw_fs.cpp
+++ b/src/intel/compiler/brw_fs.cpp
@@ -7405,8 +7405,15 @@ brw_nir_populate_wm_prog_data(const nir_shader *shader,
       (prog_data->barycentric_interp_modes &
       BRW_BARYCENTRIC_NONPERSPECTIVE_BITS) != 0;
 
-   /* You can't be coarse and per-sample */
-   assert(!key->coarse_pixel || !key->persample_interp);
+   /* The current VK_EXT_graphics_pipeline_library specification requires
+    * coarse to specified at compile time. But per sample interpolation can be
+    * dynamic. So we should never be in a situation where coarse &
+    * persample_interp are both respectively true & BRW_ALWAYS.
+    *
+    * Coarse will dynamically turned off when persample_interp is active.
+    */
+   assert(!key->coarse_pixel || key->persample_interp != BRW_ALWAYS);
+
    prog_data->coarse_pixel_dispatch =
       brw_sometimes_invert(prog_data->persample_dispatch);
    if (!key->coarse_pixel ||
diff --git a/src/intel/compiler/brw_fs_visitor.cpp b/src/intel/compiler/brw_fs_visitor.cpp
index c1e7b913c3f..53c6158727b 100644
--- a/src/intel/compiler/brw_fs_visitor.cpp
+++ b/src/intel/compiler/brw_fs_visitor.cpp
@@ -577,10 +577,8 @@ fs_visitor::emit_interpolation_setup_gfx6()
       abld.MAD(coarse_z, coarse_z, z_cy, float_pixel_y);
    }
 
-   if (wm_prog_data->uses_src_depth) {
-      assert(!wm_prog_data->uses_depth_w_coefficients);
+   if (wm_prog_data->uses_src_depth)
       this->pixel_z = fetch_payload_reg(bld, fs_payload().source_depth_reg);
-   }
 
    if (wm_prog_data->uses_depth_w_coefficients ||
        wm_prog_data->uses_src_depth) {