1 files changed, 2 insertions, 2 deletions

diff --git a/configure.ac b/configure.ac
index af70dd2..7dcf87b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -172,11 +172,11 @@ if test "$enable_largefile" != no; then
         LFS_CFLAGS="$LFS_CFLAGS -D_FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits"
     else
         AC_MSG_CHECKING(for native large file support)
-        AC_RUN_IFELSE([#include <unistd.h>
+        AC_RUN_IFELSE([AC_LANG_SOURCE([#include <unistd.h>
           int main (int argc, char **argv)
           {
               exit(!(sizeof(off_t) == 8));
-          }],
+          }])],
         [ac_cv_sys_file_offset_bits=64; AC_DEFINE(_FILE_OFFSET_BITS,64)
          AC_MSG_RESULT(yes)],
         [AC_MSG_RESULT(no)])