diff --git a/i3lock.1 b/i3lock.1
index 6ece35a..6ec352c 100644
--- a/i3lock.1
+++ b/i3lock.1
@@ -272,7 +272,7 @@ Sets the text alignment of the time, date, and keyboard layout. Values are:
 Sets the color of the date in the clock.
 
 .TP
-.B \-\-datestr="%A, %m %Y
+.B \-\-datestr="%A, %m %Y"
 Sets the format used for generating the date string. See strftime(3) for a full list of format specifiers.
 .TP
 .B \-\-datefont=sans-serif