diff --git a/src/main/resources/eu/simstadt/regionchooser/website/script/simstadt_openlayers.js b/src/main/resources/eu/simstadt/regionchooser/website/script/simstadt_openlayers.js
index cf4aad5d1ddb3b5ce51b9723bf37a1fb22927da8..c16fd46e6c74ee7f14709f592acc5307639232af 100644
--- a/src/main/resources/eu/simstadt/regionchooser/website/script/simstadt_openlayers.js
+++ b/src/main/resources/eu/simstadt/regionchooser/website/script/simstadt_openlayers.js
@@ -364,7 +364,17 @@ var regionChooser = (function(){
 	
 	publicScope.clickety_click = function() {
 		console.log("You clicked pretty well");
-		document.querySelectorAll("input.select_citygml").forEach(x => console.log(x));
+		var checkboxes = document.querySelectorAll("input.select_citygml");
+		if (checkboxes.length === 0){
+			//FIXME: Wrong. There are at least one checkbox.
+			console.log("You should select at least one citygml, though.");
+		} else{
+			checkboxes.forEach(x => {
+				if (x.checked){
+					console.log("Nice! You checked Citygml " + x.id)
+				}
+			});
+		}
 	}
 
 	focusOnMap();