diff --git a/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java b/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
index 03864d6..7efff09 100644
--- a/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
+++ b/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
@@ -874,7 +874,7 @@ public final class WorkspaceStorageHubClientService implements Workspace{
     		if(thumbBytes==null || thumbBytes.length==0)
     			throw new Exception("Thumbnail Data is not available for image with id: "+itemId);
 
-			return new org.gcube.common.storagehubwrapper.shared.tohl.impl.StreamDescriptor(new ByteArrayInputStream(thumbBytes), null, new Long(thumbBytes.length),imgContent.getThumbnailMimeType());
+			return new org.gcube.common.storagehubwrapper.shared.tohl.impl.StreamDescriptor(new ByteArrayInputStream(thumbBytes), null, new Long(thumbBytes.length),imgContent.getMimeType());
 
 		}catch(Exception e){
 			logger.error("Error on getThumbnailData for: "+itemId, e);