diff --git a/data/skeletons/lalr1.d b/data/skeletons/lalr1.d
index 3195dbf8..01175325 100644
--- a/data/skeletons/lalr1.d
+++ b/data/skeletons/lalr1.d
@@ -269,9 +269,10 @@ b4_user_union_members
     }
   }]])[
 
-]b4_lexer_if([[  private class YYLexer implements Lexer {
+]b4_lexer_if([[private class YYLexer: Lexer
+{
 ]b4_percent_code_get([[lexer]])[
-  }
+}
 ]])[
   /** The object doing lexical analysis for us.  */
   private Lexer yylexer;
diff --git a/tests/d.at b/tests/d.at
index 6be53eef..347e868c 100644
--- a/tests/d.at
+++ b/tests/d.at
@@ -112,6 +112,13 @@ AT_CHECK_D_GREP([[class YYParser : BaseClass]])
 AT_CHECK_D_MINIMAL([%define api.parser.extends {Interface}], [], [], [interface Interface {}])
 AT_CHECK_D_GREP([[class YYParser : Interface]])
 
+AT_CHECK_D_MINIMAL([%code lexer
+{
+  Symbol yylex () {return Symbol();}
+  void yyerror (string s) {import std.stdio;writeln(s);}
+}], [], [], [])
+AT_CHECK_D_GREP([[private class YYLexer: Lexer]])
+
 AT_CHECK_D_MINIMAL(
 [%define api.parser.extends {BaseClass}
 %define api.parser.implements {Interface}], [], [],