1 files changed, 1 insertions, 0 deletions
diff --git a/command.y b/command.y
index 9492e4f1..18980d38 100644
--- a/command.y
+++ b/command.y
@@ -36,6 +36,7 @@ int yydebug = 2;
 
 static int yylex(void);
 static void yyerror(const char *mesg, ...);
+#define YYERROR_IS_DECLARED	1	/* for bison 3.8. sigh. */
 
 static int find_command(const char *token, size_t toklen);