1 files changed, 1 insertions, 1 deletions

diff --git a/lib-src/digest-doc.c b/lib-src/digest-doc.c
index d8c6e620a19..b3cb58e6d99 100644
--- a/lib-src/digest-doc.c
+++ b/lib-src/digest-doc.c
@@ -31,7 +31,7 @@ but in texinfo format and sorted by function/variable name.  */
 #endif
 
 int
-main ()
+main (void)
 {
   register int ch;
   register int notfirst = 0;