diff --git a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/WindowSizeDetector.java b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/WindowSizeDetector.java
new file mode 100755
index 00000000000..651030c55aa
--- /dev/null
+++ b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/WindowSizeDetector.java
@@ -0,0 +1,7 @@
+package com.sap.sailing.gwt.ui.client;
+
+public interface WindowSizeDetector {
+
+    boolean isSmallWidth();
+
+}