1 files changed, 2 insertions, 1 deletions
diff --git a/av.c b/av.c
index 67ffad9f42..3d15d58f85 100644
--- a/av.c
+++ b/av.c
@@ -701,7 +701,8 @@ Perl_av_unshift(pTHX_ register AV *av, register I32 num)
 /*
 =for apidoc av_shift
 
-Shifts an SV off the beginning of the array.
+Shifts an SV off the beginning of the array. Returns C<&PL_sv_undef> if the 
+array is empty.
 
 =cut
 */