--- a/spec/lib/pg_query/deparse_bad_tree_spec.rb
+++ b/spec/lib/pg_query/deparse_bad_tree_spec.rb
@@ -25,7 +25,7 @@
 
         expect { PgQuery.deparse(tree) }.to raise_error do |error|
           expect(error).to be_a(described_class::ParseError)
-          expect(error.message).to eq "deparse error in deparseTargetList: ResTarget without val (pg_query_deparse.c:1419)"
+          expect(error.message).to eq "deparse: error in deparseTargetList: ResTarget without val (pg_query_deparse.c:1417)"
         end
       end
     end