diff --git a/plugins/hypervisors/vmware/src/com/cloud/storage/resource/VmwareStorageProcessor.java b/plugins/hypervisors/vmware/src/com/cloud/storage/resource/VmwareStorageProcessor.java
index be922823e17..527950d0e39 100644
--- a/plugins/hypervisors/vmware/src/com/cloud/storage/resource/VmwareStorageProcessor.java
+++ b/plugins/hypervisors/vmware/src/com/cloud/storage/resource/VmwareStorageProcessor.java
@@ -1281,7 +1281,7 @@ public class VmwareStorageProcessor implements StorageProcessor {
             // attachment
             DatastoreMO secondaryDsMo = new DatastoreMO(this.hostService.getServiceContext(null), morSecondaryDs);
             String storeName = secondaryDsMo.getName();
-            String isoDatastorePath = String.format("[%s] %s%s", storeName, isoStorePathFromRoot, isoFileName);
+            String isoDatastorePath = String.format("[%s] %s/%s", storeName, isoStorePathFromRoot, isoFileName);
 
             if (isAttach) {
                 vmMo.attachIso(isoDatastorePath, morSecondaryDs, true, false);