1 files changed, 1 insertions, 0 deletions
diff --git a/sv.c b/sv.c
index 87cc0c2420..24477ba0c0 100644
--- a/sv.c
+++ b/sv.c
@@ -13236,6 +13236,7 @@ perl_clone_using(PerlInterpreter *proto_perl, UV flags,
     PL_utf8_tofold	= sv_dup_inc(proto_perl->Iutf8_tofold, param);
     PL_utf8_idstart	= sv_dup_inc(proto_perl->Iutf8_idstart, param);
     PL_utf8_xidstart	= sv_dup_inc(proto_perl->Iutf8_xidstart, param);
+    PL_utf8_perl_idstart = sv_dup_inc(proto_perl->Iutf8_perl_idstart, param);
     PL_utf8_idcont	= sv_dup_inc(proto_perl->Iutf8_idcont, param);
     PL_utf8_xidcont	= sv_dup_inc(proto_perl->Iutf8_xidcont, param);
     PL_utf8_foldable	= sv_dup_inc(proto_perl->Iutf8_foldable, param);