diff --git a/test/poll.c b/test/poll.c
index 660f384..cd5ff90 100644
--- a/test/poll.c
+++ b/test/poll.c
@@ -14,7 +14,7 @@ static struct burn_drive_info *drives;
 static unsigned int n_drives;
 int NEXT;
 
-static void catch_int ()
+static void catch_int (int signum)
 {
 	NEXT = 1;
 }