diff --git a/modules/libcom/src/osi/epicsEvent.h b/modules/libcom/src/osi/epicsEvent.h
index 4fd2d338a..d69c496f9 100644
--- a/modules/libcom/src/osi/epicsEvent.h
+++ b/modules/libcom/src/osi/epicsEvent.h
@@ -99,7 +99,7 @@ public:
      **/
     void wait ();
     /**\brief Wait for the event or until the specified timeout.
-     * \param timeout The timeout delay in seconds. A timeout of zero is
+     * \param timeout The timeout delay in seconds. A timeout of zero or less is
      * equivalent to calling tryWait(); NaN or any value too large to be
      * represented to the target OS is equivalent to no timeout.
      * \return True if the event was triggered, False if it timed out.
@@ -189,10 +189,10 @@ LIBCOM_API epicsEventStatus epicsEventWait(
  */
 LIBCOM_API void epicsEventMustWait(epicsEventId id);
 
-/**\brief Wait an the event or until the specified timeout period is over.
+/**\brief Wait for the event or until the specified timeout period is over.
  * \note Blocks until full or timeout.
  * \param id The event identifier.
- * \param timeout The timeout delay in seconds. A timeout of zero is
+ * \param timeout The timeout delay in seconds. A timeout of zero or less is
  * equivalent to calling epicsEventTryWait(); NaN or any value too large
  * to be represented to the target OS is equivalent to no timeout.
  * \return Status indicator.