diff --git a/src/java/com/phenix/pct/PCTConnection.java b/src/java/com/phenix/pct/PCTConnection.java
index 0eed1a9fb..e7a320ea9 100755
--- a/src/java/com/phenix/pct/PCTConnection.java
+++ b/src/java/com/phenix/pct/PCTConnection.java
@@ -304,10 +304,12 @@ public List<String> getConnectParametersList() {
             list.add(logicalName);
         }
 
-        if (Boolean.TRUE.equals(singleUser)) {
-            list.add("-1"); //$NON-NLS-1$
-        } else {
-            list.remove("-1");
+        if (singleUser != null) {
+            if (singleUser) {
+                list.add("-1"); //$NON-NLS-1$
+            } else {
+                list.remove("-1");
+            }
         }
 
         if (cacheFile != null) {