diff --git a/src/main/java/net/dv8tion/jda/api/events/message/react/MessageReactionAddEvent.java b/src/main/java/net/dv8tion/jda/api/events/message/react/MessageReactionAddEvent.java
index fac8041150..db2515f76b 100644
--- a/src/main/java/net/dv8tion/jda/api/events/message/react/MessageReactionAddEvent.java
+++ b/src/main/java/net/dv8tion/jda/api/events/message/react/MessageReactionAddEvent.java
@@ -51,6 +51,7 @@ public MessageReactionAddEvent(@Nonnull JDA api, long responseNumber, @Nullable
 
     /**
      * The user id of the original message author.
+     * <br>This might be 0 for webhook messages.
      *
      * @return The user id of the original message author.
      */
@@ -63,6 +64,7 @@ public String getMessageAuthorId()
 
     /**
      * The user id of the original message author.
+     * <br>This might be 0 for webhook messages.
      *
      * @return The user id of the original message author.
      */