diff --git a/runtime/utils.cc b/runtime/utils.cc
index 7234ec0..dd0bdbb 100644
--- a/runtime/utils.cc
+++ b/runtime/utils.cc
@@ -1177,7 +1177,7 @@
     os << "\n";
   }
 #else
-  UNUSED(os, tid, prefix, current_method);
+  UNUSED(os, tid, prefix, current_method, ucontext_ptr);
 #endif
 }