diff --git a/server/src/main/java/com/vaadin/ui/Grid.java b/server/src/main/java/com/vaadin/ui/Grid.java
index 6e7d7b1cd4f..1b824cf53f8 100644
--- a/server/src/main/java/com/vaadin/ui/Grid.java
+++ b/server/src/main/java/com/vaadin/ui/Grid.java
@@ -3010,6 +3010,9 @@ public boolean isDetailsVisible(T item) {
     /**
      * Gets a {@link Column} of this grid by its identifying string.
      *
+     * When you use the Grid constructor with bean class, the columns are 
+     * initialised with columnId being the property name. 
+     *
      * @see Column#setId(String)
      *
      * @param columnId