1 files changed, 1 insertions, 2 deletions
diff --git a/src/tac.c b/src/tac.c
index d81ff6c07..6b166d7d1 100644
--- a/src/tac.c
+++ b/src/tac.c
@@ -597,8 +597,7 @@ main (int argc, char **argv)
   sentinel_length = 1;
   separator_ends_record = 1;
 
-  while ((optc = getopt_long (argc, argv, "brs:", longopts, (int *) 0))
-	 != EOF)
+  while ((optc = getopt_long (argc, argv, "brs:", longopts, NULL)) != -1)
     {
       switch (optc)
 	{