diff --git a/src/apps/bin/top.c b/src/apps/bin/top.c
index fb66daf407..58b5665570 100644
--- a/src/apps/bin/top.c
+++ b/src/apps/bin/top.c
@@ -391,7 +391,7 @@ usage(const char *myname)
 	exit(1);
 }
 
-void
+int
 main(int argc, char **argv)
 {
 	thread_time_list_t baseline;