diff --git a/rse/plugins/org.eclipse.dstore.core/src/org/eclipse/dstore/core/model/DataStore.java b/rse/plugins/org.eclipse.dstore.core/src/org/eclipse/dstore/core/model/DataStore.java
index 1f9917445e9..1f14db8343b 100644
--- a/rse/plugins/org.eclipse.dstore.core/src/org/eclipse/dstore/core/model/DataStore.java
+++ b/rse/plugins/org.eclipse.dstore.core/src/org/eclipse/dstore/core/model/DataStore.java
@@ -3583,7 +3583,11 @@ public final class DataStore
   			if (logDirectory == null){
   				logDirectory = ".eclipse" + File.separator + "RSE" + File.separator;  //$NON-NLS-1$//$NON-NLS-2$
   			}
-  			  			
+  			// append a '/' if not there
+  			if (logDirectory.charAt( logDirectory.length() -1 ) != File.separatorChar ) {
+  				logDirectory = logDirectory + File.separator;
+  			}
+  			
   			_userPreferencesDirectory = _userPreferencesDirectory + logDirectory + clientUserID;  			
   			
 	  		File dirFile = new File(_userPreferencesDirectory);