diff --git a/src/intel/common/intel_l3_config.c b/src/intel/common/intel_l3_config.c
index 6b3536b8c59..4991dce6cd2 100644
--- a/src/intel/common/intel_l3_config.c
+++ b/src/intel/common/intel_l3_config.c
@@ -200,6 +200,9 @@ get_l3_list(const struct intel_device_info *devinfo)
       else
          return &tgl_l3_list;
 
+   case 20:
+      return &empty_l3_list;
+
    default:
       unreachable("Not implemented");
    }