1 files changed, 1 insertions, 0 deletions

diff --git a/coreutils/sum.c b/coreutils/sum.c
index d62f2cfde..9327ca55e 100644
--- a/coreutils/sum.c
+++ b/coreutils/sum.c
@@ -74,6 +74,7 @@ static unsigned sum_file(const char *file, const unsigned type)
 #undef buf
 }
 
+int sum_main(int argc, char **argv);
 int sum_main(int argc, char **argv)
 {
         unsigned n;