fix punctuation in a panic message

1 files changed, 1 insertions, 1 deletions

diff --git a/op.c b/op.c
index 09f45d06ea..a9296f3fad 100644
--- a/op.c
+++ b/op.c
@@ -9113,7 +9113,7 @@ Perl_ck_entersub_args_proto(pTHX_ OP *entersubop, GV *namegv, SV *protosv)
     const char *e = NULL;
     PERL_ARGS_ASSERT_CK_ENTERSUB_ARGS_PROTO;
     if (SvTYPE(protosv) == SVt_PVCV ? !SvPOK(protosv) : !SvOK(protosv))
-	Perl_croak(aTHX_ "panic: ck_entersub_args_proto CV with no proto,"
+	Perl_croak(aTHX_ "panic: ck_entersub_args_proto CV with no proto, "
 		   "flags=%lx", (unsigned long) SvFLAGS(protosv));
     if (SvTYPE(protosv) == SVt_PVCV)
 	 proto = CvPROTO(protosv), proto_len = CvPROTOLEN(protosv);