diff --git a/docs/parent_page/options.md b/docs/parent_page/options.md
index 0aa552d03..80af2a265 100644
--- a/docs/parent_page/options.md
+++ b/docs/parent_page/options.md
@@ -135,6 +135,15 @@ Resize iFrame to content width.
 
 Set the number of pixels the iFrame content size has to change by, before triggering a resize of the iFrame.
 
+
+### warningTimeout
+
+	default: 5000
+	type:    integer
+
+Set the number of milliseconds after which a warning is logged if the iFrame has not responded. Set to `0` to supress warning messages of this type.
+
+
 ### widthCalculationMethod
 
     default: 'scroll'