diff --git a/cmd/goyacc/yacc.go b/cmd/goyacc/yacc.go
index f319950b..83849134 100644
--- a/cmd/goyacc/yacc.go
+++ b/cmd/goyacc/yacc.go
@@ -60,9 +60,9 @@ import (
 // the following are adjustable
 // according to memory size
 const (
-	ACTSIZE  = 30000
-	NSTATES  = 2000
-	TEMPSIZE = 2000
+	ACTSIZE  = 120000
+	NSTATES  = 8000
+	TEMPSIZE = 8000
 
 	SYMINC   = 50  // increase for non-term or term
 	RULEINC  = 50  // increase for max rule length prodptr[i]