diff --git a/libcc1/libcp1plugin.cc b/libcc1/libcp1plugin.cc
index 79694b9196411ab71a8ad5934c12b2e6a1b7c4ac..ea6ee55340159cb1f394244905140a722e0726f8 100644
--- a/libcc1/libcp1plugin.cc
+++ b/libcc1/libcp1plugin.cc
@@ -541,7 +541,7 @@ record_decl_address (plugin_context *ctx, decl_addr_value value)
   **slot = value;
   /* We don't want GCC to warn about e.g. static functions
      without a code definition.  */
-  TREE_NO_WARNING (value.decl) = 1;
+  suppress_warning (value.decl);
   return *slot;
 }