diff --git a/man4/tty_ioctl.4 b/man4/tty_ioctl.4
index 0f877930f..27af773ce 100644
--- a/man4/tty_ioctl.4
+++ b/man4/tty_ioctl.4
@@ -246,7 +246,7 @@ For this case,
 should be specified as zero.
 
 If this terminal is already the controlling terminal
-of a different session group then the ioctl fails with
+of a different session group, then the ioctl fails with
 .BR EPERM ,
 unless the caller has the
 .BR CAP_SYS_ADMIN