diff --git a/gdb/c-exp.y b/gdb/c-exp.y
index c7cf672c8a0..54ce28b34ae 100644
--- a/gdb/c-exp.y
+++ b/gdb/c-exp.y
@@ -55,6 +55,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define	yypgo	c_pgo		
 #define	yyact	c_act		
 #define	yyexca	c_exca
+#define yyerrflag c_errflag
+#define yynerrs	c_nerrs
 
 /* Forward decls */
 void yyerror ();
diff --git a/gdb/m2-exp.y b/gdb/m2-exp.y
index 5beefe6c8b1..ce81e63c99b 100644
--- a/gdb/m2-exp.y
+++ b/gdb/m2-exp.y
@@ -55,6 +55,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define	yypgo	m2_pgo
 #define	yyact	m2_act
 #define	yyexca	m2_exca
+#define yyerrflag m2_errflag
+#define yynerrs	m2_nerrs
 
 /* Forward decl's */
 void yyerror ();