diff --git a/compile.c b/compile.c
index b25edcb8d2..6c6d933223 100644
--- a/compile.c
+++ b/compile.c
@@ -5964,8 +5964,14 @@ iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *anchor,
 			}
 			break;
 		      case TS_FUNCPTR:
-			if (!RTEST(op)) rb_raise(rb_eArgError, "cannot load funcptr");
-			argv[j] = op;
+			{
+#if SIZEOF_VALUE <= SIZEOF_LONG
+			    long funcptr = NUM2LONG(op);
+#else
+			    LONG_LONG funcptr = NUM2LL(op);
+#endif
+			    argv[j] = (VALUE)funcptr;
+			}
 			break;
 		      default:
 			rb_raise(rb_eSyntaxError, "unknown operand: %c", insn_op_type((VALUE)insn_id, j));
diff --git a/iseq.c b/iseq.c
index 7e1ac877c1..f1b38240a8 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1987,7 +1987,14 @@ iseq_data_to_ary(rb_iseq_t *iseq)
 		}
 		break;
 	      case TS_FUNCPTR:
-		rb_ary_push(ary, Qnil);
+		{
+#if SIZEOF_VALUE <= SIZEOF_LONG
+		    VALUE val = LONG2NUM((SIGNED_VALUE)*seq);
+#else
+		    VALUE val = LL2NUM((SIGNED_VALUE)*seq);
+#endif
+		    rb_ary_push(ary, val);
+		}
 		break;
 	      default:
 		rb_bug("unknown operand: %c", insn_op_type(insn, j));