diff --git a/compile.c b/compile.c
index 05e4091172..36cc973f3f 100644
--- a/compile.c
+++ b/compile.c
@@ -9520,7 +9520,7 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
             /* rest argument */
             int idx = local_body->local_table_size - local_body->param.rest_start;
             ADD_GETLOCAL(args, node, idx, lvar_level);
-            ADD_INSN1(args, node, splatarray, Qfalse);
+            ADD_INSN1(args, node, splatarray, local_body->param.flags.has_post ? Qtrue : Qfalse);
 
             argc = local_body->param.rest_start + 1;
             flag |= VM_CALL_ARGS_SPLAT;
@@ -9529,6 +9529,7 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
             /* post arguments */
             int post_len = local_body->param.post_num;
             int post_start = local_body->param.post_start;
+            flag |= VM_CALL_ARGS_SPLAT_MUT;
 
             if (local_body->param.flags.has_rest) {
                 int j;
@@ -9536,8 +9537,7 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
                     int idx = local_body->local_table_size - (post_start + j);
                     ADD_GETLOCAL(args, node, idx, lvar_level);
                 }
-                ADD_INSN1(args, node, newarray, INT2FIX(j));
-                ADD_INSN (args, node, concatarray);
+                ADD_INSN1(args, node, pushtoarray, INT2FIX(j));
                 /* argc is settled at above */
             }
             else {