diff --git a/m4/ac_attribute.m4 b/m4/ac_attribute.m4
index 34bb4dbf2..3926d23d5 100644
--- a/m4/ac_attribute.m4
+++ b/m4/ac_attribute.m4
@@ -3,7 +3,7 @@ dnl Copyright (C) 2008 Vincent Torri <vtorri at univ-evry dot fr>
 dnl That code is public domain and can be freely used or copied.
 dnl Originally snatched from somewhere...
 
-dnl Macro for checking if the compiler supports __atribute__
+dnl Macro for checking if the compiler supports __attribute__
 
 dnl Usage: AC_C___ATTRIBUTE__
 dnl call AC_DEFINE for HAVE___ATTRIBUTE__ and __UNUSED__
@@ -21,14 +21,14 @@ AC_CACHE_VAL([ac_cv___attribute__],
    [AC_TRY_COMPILE(
        [
 #include <stdlib.h>
-       ],
-       [
+
 int func(int x);
 int foo(int x __attribute__ ((unused)))
 {
    exit(1);
 }
        ],
+       [],
        [ac_cv___attribute__="yes"],
        [ac_cv___attribute__="no"]
     )]