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-rw-r--r--manual/examples/subopt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/manual/examples/subopt.c b/manual/examples/subopt.c
index 4a89f6441e..df71720fe9 100644
--- a/manual/examples/subopt.c
+++ b/manual/examples/subopt.c
@@ -29,7 +29,7 @@ main (int argc, char *argv[])
   char *subopts, *value;
   int opt;
 
-  while ((opt = getopt (argc, argv, "at:o:")) != EOF)
+  while ((opt = getopt (argc, argv, "at:o:")) != -1)
     switch (opt)
       {
       case 'a':