diff --git a/src/main/java/com/flowingcode/vaadin/addons/twincolgrid/TwinColGrid.java b/src/main/java/com/flowingcode/vaadin/addons/twincolgrid/TwinColGrid.java
index 4419b30..dc82684 100644
--- a/src/main/java/com/flowingcode/vaadin/addons/twincolgrid/TwinColGrid.java
+++ b/src/main/java/com/flowingcode/vaadin/addons/twincolgrid/TwinColGrid.java
@@ -696,7 +696,7 @@ public Registration addValueChangeListener(
 
   @Override
   public boolean isReadOnly() {
-    return isReadOnly();
+    return getAvailableGrid().getSelectionModel() == SelectionMode.NONE;
   }
 
   @Override