diff --git a/extlib/benz/include/picrin/irep.h b/extlib/benz/include/picrin/irep.h
index 7804c2d4..fb59a4ce 100644
--- a/extlib/benz/include/picrin/irep.h
+++ b/extlib/benz/include/picrin/irep.h
@@ -25,18 +25,11 @@ struct pic_irep {
   int argc, localc, capturec;
   bool varg;
   union {
-    struct {
-      int code_offset;
-      int ints_offset;
-      int nums_offset;
-      int irep_offset;
-    } p;
     struct {
       pic_code *code;
       int *ints;
       double *nums;
       union irep_node {
-        int offset;
         struct pic_irep *i;
       } *irep;
     } s;