diff --git a/share/man/man9/intr_event.9 b/share/man/man9/intr_event.9
index 2ad92c96bdc..d1964ce289a 100644
--- a/share/man/man9/intr_event.9
+++ b/share/man/man9/intr_event.9
@@ -230,7 +230,7 @@ argument specifies the priority of this handler,
 corresponding to the values defined in
 .In sys/priority.h .
 It determines the order this handler is called relative to the other handlers
-for this event, as well as the scheduling priority of of the backing kernel
+for this event, as well as the scheduling priority of the backing kernel
 thread.
 .Fa flags
 argument can be used to specify properties of this handler as defined in