diff --git a/src/freedreno/vulkan/tu_lrz.cc b/src/freedreno/vulkan/tu_lrz.cc
index 6d84f4bd421..e4d8c1211ab 100644
--- a/src/freedreno/vulkan/tu_lrz.cc
+++ b/src/freedreno/vulkan/tu_lrz.cc
@@ -761,7 +761,8 @@ tu6_calculate_lrz_state(struct tu_cmd_buffer *cmd,
    gras_lrz_cntl.enable = true;
    gras_lrz_cntl.lrz_write =
       z_write_enable &&
-      !(fs->fs.lrz.status & TU_LRZ_FORCE_DISABLE_WRITE);
+      !(fs->fs.lrz.status & TU_LRZ_FORCE_DISABLE_WRITE) &&
+      !cmd->vk.dynamic_graphics_state.ms.alpha_to_coverage_enable;
    gras_lrz_cntl.z_write_enable = z_write_enable;
    gras_lrz_cntl.z_bounds_enable = z_bounds_enable;
    gras_lrz_cntl.fc_enable = cmd->state.lrz.fast_clear;
diff --git a/src/freedreno/vulkan/tu_shader.cc b/src/freedreno/vulkan/tu_shader.cc
index c069e743dc8..8fc125f9211 100644
--- a/src/freedreno/vulkan/tu_shader.cc
+++ b/src/freedreno/vulkan/tu_shader.cc
@@ -2830,7 +2830,7 @@ tu_shader_create(struct tu_device *dev,
       const struct ir3_shader_variant *fs = shader->variant;
       shader->fs.sample_shading = fs->sample_shading;
       shader->fs.has_fdm = key->fragment_density_map;
-      if (fs->has_kill)
+      if (fs->has_kill || fs->writes_smask)
          shader->fs.lrz.status |= TU_LRZ_FORCE_DISABLE_WRITE;
       if (fs->no_earlyz)
          shader->fs.lrz.status = TU_LRZ_FORCE_DISABLE_LRZ;