diff --git a/include/editing-clocks.html b/include/editing-clocks.html
index 91349af9..9eb82f9d 100644
--- a/include/editing-clocks.html
+++ b/include/editing-clocks.html
@@ -112,7 +112,7 @@
With the mouse pointer over the clock, moving the scroll wheel changes the
clock values. Moving the scroll wheel up (⇑)
increases the value shown on the clock, moving it down (⇑) decreases it. The step size is equal to the unit
+ class="mouse">⇓) decreases it. The step size is equal to the unit
of the field hovered over (seconds, hours, etc.).