diff --git a/contrib/tzcode/stdtime/localtime.c b/contrib/tzcode/stdtime/localtime.c
index b1981b614300..9605eeb30e52 100644
--- a/contrib/tzcode/stdtime/localtime.c
+++ b/contrib/tzcode/stdtime/localtime.c
@@ -450,6 +450,7 @@ register const int	doextend;
 			_close(fid);
 			return -1;
 		}
+		free(fullname);
 	}
 	u = malloc(sizeof(*u));
 	if (u == NULL)