diff --git a/help/PropData.md b/help/PropData.md
index 146454b..720ced6 100644
--- a/help/PropData.md
+++ b/help/PropData.md
@@ -1,6 +1,6 @@
 # *PropData* reference
 See also:
-* <a href="PropAction.md" target="_blank">PropAction</a> class reference
+* <a href="https://github.com/xcape-io/ArduinoProps/blob/master/help/ArduinoProps_sketch.md#arduinoprops-sketch" target="_blank">ArduinoProps sketch</a>
 * <a href="Prop.md" target="_blank">Prop</a> class reference
 * <a href="PropAction.md" target="_blank">PropAction</a> class reference