diff --git a/usr.bin/yacc/output.c b/usr.bin/yacc/output.c
index 31bb4be3eb2f..2390a946c62d 100644
--- a/usr.bin/yacc/output.c
+++ b/usr.bin/yacc/output.c
@@ -526,7 +526,7 @@ pack_table()
     base = NEW2(nvectors, short);
     pos = NEW2(nentries, short);
 
-    maxtable = 1000;
+    maxtable = 10000;
     table = NEW2(maxtable, short);
     check = NEW2(maxtable, short);