diff --git a/src/amd/vulkan/si_cmd_buffer.c b/src/amd/vulkan/si_cmd_buffer.c
index fb5afd30f86..13e43352d45 100644
--- a/src/amd/vulkan/si_cmd_buffer.c
+++ b/src/amd/vulkan/si_cmd_buffer.c
@@ -511,8 +511,8 @@ si_emit_graphics(struct radv_device *device, struct radeon_cmdbuf *cs)
    if (physical_device->rad_info.gfx_level >= GFX11) {
       /* ACCUM fields changed their meaning. */
       radeon_set_context_reg(cs, R_028B50_VGT_TESS_DISTRIBUTION,
-                                 S_028B50_ACCUM_ISOLINE(255) | S_028B50_ACCUM_TRI(255) |
-                                 S_028B50_ACCUM_QUAD(255) | S_028B50_DONUT_SPLIT_GFX9(24) |
+                                 S_028B50_ACCUM_ISOLINE(128) | S_028B50_ACCUM_TRI(128) |
+                                 S_028B50_ACCUM_QUAD(128) | S_028B50_DONUT_SPLIT_GFX9(24) |
                                  S_028B50_TRAP_SPLIT(6));
    } else if (physical_device->rad_info.gfx_level >= GFX9) {
       radeon_set_context_reg(cs, R_028B50_VGT_TESS_DISTRIBUTION,