diff --git a/frontend-js/src/main/js/logger.js b/frontend-js/src/main/js/logger.js
index 41218f79ddb0e9b5c92b9ff3c5e4e0cfd0325353..784d8e8c437d698585c7664b810a7e7ced4b0ae7 100644
--- a/frontend-js/src/main/js/logger.js
+++ b/frontend-js/src/main/js/logger.js
@@ -1,6 +1,26 @@
 "use strict";
 
 var log4js = require('log4js');
-var logger = log4js.getLogger();
 
+var $depth = 10;
+
+log4js.configure({
+  appenders : [ {
+    type : "console",
+    layout : {
+      type : "pattern",
+      pattern : "%[%p {%x{ln}} -%]\t%m",
+      tokens : {
+        ln : function() {
+          // The caller:
+          var filePath = (new Error()).stack.split("\n")[$depth].split("\\");
+          filePath = filePath[filePath.length - 1].split("/");
+          return filePath[filePath.length - 1];
+        }
+      }
+    }
+  } ]
+});
+
+var logger = log4js.getLogger();
 module.exports = logger;
diff --git a/frontend-js/src/main/js/map/overlay/.AliasOverlay.js.un~ b/frontend-js/src/main/js/map/overlay/.AliasOverlay.js.un~
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diff --git a/frontend-js/src/main/js/map/overlay/.ReactionOverlay.js.un~ b/frontend-js/src/main/js/map/overlay/.ReactionOverlay.js.un~
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diff --git a/frontend-js/src/test/js/map/.CustomMapOptions-test.js.un~ b/frontend-js/src/test/js/map/.CustomMapOptions-test.js.un~
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diff --git a/frontend-js/src/test/js/map/data/.LayoutAliasTest.js.un~ b/frontend-js/src/test/js/map/data/.LayoutAliasTest.js.un~
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diff --git a/frontend-js/src/test/js/map/window/.AliasInfoWindow-test.js.un~ b/frontend-js/src/test/js/map/window/.AliasInfoWindow-test.js.un~
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