1 files changed, 1 insertions, 1 deletions
diff --git a/rt/tst-aio.c b/rt/tst-aio.c
index 24efad3e23..ba50bdb082 100644
--- a/rt/tst-aio.c
+++ b/rt/tst-aio.c
@@ -48,7 +48,7 @@ int fd;
 void
 do_prepare (int argc, char *argv[])
 {
-  char name_len;
+  size_t name_len;
 
   name_len = strlen (test_dir);
   name = malloc (name_len + sizeof ("/aioXXXXXX"));