diff --git a/quic/core/qpack/qpack_constants.cc b/quic/core/qpack/qpack_constants.cc
index dd4487d..6644918 100644
--- a/quic/core/qpack/qpack_constants.cc
+++ b/quic/core/qpack/qpack_constants.cc
@@ -30,6 +30,8 @@
     }
     DCHECK_EQ(1u, match_count) << static_cast<int>(byte);
   }
+#else
+  (void)language;
 #endif
 }