(main): Declare function pointer with prototype.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/sum.c b/src/sum.c
index aa4c0a70b..3e405bb51 100644
--- a/src/sum.c
+++ b/src/sum.c
@@ -216,7 +216,7 @@ main (int argc, char **argv)
   int errors = 0;
   int optc;
   int files_given;
-  int (*sum_func) () = bsd_sum_file;
+  int (*sum_func) PARAMS ((const char *, int)) = bsd_sum_file;
 
   program_name = argv[0];
   setlocale (LC_ALL, "");