diff --git a/compile.c b/compile.c
index 79b17abd93..492388a4f0 100644
--- a/compile.c
+++ b/compile.c
@@ -3582,7 +3582,6 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 
     if (IS_INSN_ID(iobj, newarray) ||
         IS_INSN_ID(iobj, duparray) ||
-        IS_INSN_ID(iobj, expandarray) ||
         IS_INSN_ID(iobj, concatarray) ||
         IS_INSN_ID(iobj, splatarray) ||
         0) {