diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c
index a39eeb6ef1f2..f8d253a61970 100644
--- a/tools/lib/traceevent/event-plugin.c
+++ b/tools/lib/traceevent/event-plugin.c
@@ -310,7 +310,7 @@ static int process_option(const char *plugin, const char *option, const char *va
 /**
  * tep_plugin_add_option - add an option/val pair to set plugin options
  * @name: The name of the option (format: <plugin>:<option> or just <option>)
- * @val: (optiona) the value for the option
+ * @val: (optional) the value for the option
  *
  * Modify a plugin option. If @val is given than the value of the option
  * is set (note, some options just take a boolean, so @val must be either