diff --git a/spt.1 b/spt.1
index 80bf6cc..6c38be5 100644
--- a/spt.1
+++ b/spt.1
@@ -16,10 +16,10 @@ double your efficiency.
 receives 2 signals:
 .P
 .RS
-.B SIGUSR1()
+.B SIGUSR1
 \- show remaining time, state
 .br
-.B SIGUSR2()
+.B SIGUSR2
 \- play/pause the timer
 .RE
 .SH OPTIONS