2 files changed, 2 insertions, 1 deletions
diff --git a/sv.c b/sv.c
index b44d7a1230..c28ed7d1d5 100644
--- a/sv.c
+++ b/sv.c
@@ -12822,6 +12822,7 @@ Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl, CLONE_PARAMS* param)
 	    /* fall through */
 	case SAVEt_FREESV:
 	case SAVEt_MORTALIZESV:
+	case SAVEt_READONLY_OFF:
 	    sv = (const SV *)POPPTR(ss,ix);
 	    TOPPTR(nss,ix) = sv_dup_inc(sv, param);
 	    break;
diff --git a/t/porting/ss_dup.t b/t/porting/ss_dup.t
index 2cb74c9357..81435ced8a 100644
--- a/t/porting/ss_dup.t
+++ b/t/porting/ss_dup.t
@@ -1,6 +1,6 @@
 #!perl
 
-@TODO = qw [ SAVEt_READONLY_OFF SAVEt_SAVESWITCHSTACK
+@TODO = qw [ SAVEt_SAVESWITCHSTACK
              SAVEt_STACK_CXPOS ];
 @TODO{@TODO} = ();