diff --git a/pdb-ui/src/main/resources/resources/js/ui.js b/pdb-ui/src/main/resources/resources/js/ui.js
index 4db7529..29f1417 100644
--- a/pdb-ui/src/main/resources/resources/js/ui.js
+++ b/pdb-ui/src/main/resources/resources/js/ui.js
@@ -1259,7 +1259,8 @@ function GetURLParameter(paramName, defaultValue)
 
 function GetURLParameterArray(paramName, defaults)
 {
-	var result = defaults != undefined ? defaults : [];
+    var foundParameter = false;
+	var result = [];
 	var pageURL = window.location.search.substring(1);
     var URLVariables = pageURL.split('&');
     for (var i = 0; i < URLVariables.length; i++)
@@ -1268,8 +1269,14 @@ function GetURLParameterArray(paramName, defaults)
         if (decodeURIComponent(keyValue[0]) == paramName+"[]")
         {
             result.push(decodeURIComponent(keyValue[1]));
+            foundParameter = true;
         }
     }
+    
+    if (!foundParameter){
+        result = defaults != undefined ? defaults : []
+    }
+    
     return result;
 }