1 files changed, 2 insertions, 1 deletions
diff --git a/hv.h b/hv.h
index fc5bcdeb9b..956f949fc1 100644
--- a/hv.h
+++ b/hv.h
@@ -156,7 +156,8 @@ Null HV pointer.
 =head1 Hash Manipulation Functions
 
 =for apidoc Am|char*|HvNAME|HV* stash
-Returns the package name of a stash.  See C<SvSTASH>, C<CvSTASH>.
+Returns the package name of a stash, or NULL if C<stash> isn't a stash.
+See C<SvSTASH>, C<CvSTASH>.
 
 =for apidoc Am|void*|HeKEY|HE* he
 Returns the actual pointer stored in the key slot of the hash entry. The