diff --git a/src/intel/compiler/brw_vec4_tcs.h b/src/intel/compiler/brw_vec4_tcs.h
index efa13ecc6cc..d0285673adc 100644
--- a/src/intel/compiler/brw_vec4_tcs.h
+++ b/src/intel/compiler/brw_vec4_tcs.h
@@ -68,11 +68,11 @@ protected:
    void emit_urb_write(const src_reg &value, unsigned writemask,
                        unsigned base_offset, const src_reg &indirect_offset);
 
-   /* we do not use the normal end-of-shader URB write mechanism -- but every vec4 stage
-    * must provide implementations of these:
+   /* we do not use the normal end-of-shader URB write mechanism -- but every
+    * vec4 stage must provide implementations of these:
     */
-   virtual void emit_urb_write_header(int mrf) {}
-   virtual vec4_instruction *emit_urb_write_opcode(bool complete) { return NULL; }
+   virtual void emit_urb_write_header(int /* mrf */) {}
+   virtual vec4_instruction *emit_urb_write_opcode(bool /* complete */) { return NULL; }
 
    const struct brw_vue_map *input_vue_map;