diff --git a/docs/api/ipc-main.md b/docs/api/ipc-main.md
index f6e24e9f63ce..a9afa409a0d7 100644
--- a/docs/api/ipc-main.md
+++ b/docs/api/ipc-main.md
@@ -78,9 +78,9 @@ Removes the specified `listener` from the listener array for the specified
 
 ### `ipcMain.removeAllListeners([channel])`
 
-* `channel` String (optional)
+* `channel` String
 
-Removes all listeners, or those of the specified `channel`.
+Removes listeners of the specified `channel`.
 
 ## Event object