diff --git a/src/gui/shellextensionsserver.cpp b/src/gui/shellextensionsserver.cpp
index 1150a3107b7a0..5f5da92fb16df 100644
--- a/src/gui/shellextensionsserver.cpp
+++ b/src/gui/shellextensionsserver.cpp
@@ -155,7 +155,7 @@ void ShellExtensionsServer::processCustomStateRequest(QLocalSocket *socket, cons
             }
             _customStateSocketConnections.remove(socket->socketDescriptor());
         }
-        
+
         const auto folder = FolderMan::instance()->folder(folderAlias);
         SyncJournalFileRecord record;
         if (!folder || !folder->journalDb()->getFileRecord(filePathRelative, &record) || !record.isValid()) {
@@ -219,7 +219,7 @@ void ShellExtensionsServer::processCustomStateRequest(QLocalSocket *socket, cons
         _runningLsColJobsForPaths.removeOne(lsColJobPath);
         emit directoryListingIterationFinished(folderAlias);
     });
-    
+
     _runningLsColJobsForPaths.push_back(lsColJobPath);
     lsColJob->start();
 }
@@ -251,6 +251,7 @@ void ShellExtensionsServer::processThumbnailRequest(QLocalSocket *socket, const
     queryItems.addQueryItem(QStringLiteral("fileId"), record._fileId);
     queryItems.addQueryItem(QStringLiteral("x"), QString::number(thumbnailRequestInfo.size.width()));
     queryItems.addQueryItem(QStringLiteral("y"), QString::number(thumbnailRequestInfo.size.height()));
+    queryItems.addQueryItem(QStringLiteral("a"), QStringLiteral("true")); // Keep aspect ratio
     const QUrl jobUrl = Utility::concatUrlPath(folder->accountState()->account()->url(), getFetchThumbnailPath(), queryItems);
     const auto job = new SimpleNetworkJob(folder->accountState()->account());
     job->startRequest(QByteArrayLiteral("GET"), jobUrl);
@@ -260,7 +261,7 @@ void ShellExtensionsServer::processThumbnailRequest(QLocalSocket *socket, const
             sendEmptyDataAndCloseSession(socket);
             return;
         }
-        
+
         auto messageReplyWithThumbnail = QVariantMap {
             {VfsShellExtensions::Protocol::ThumnailProviderDataKey, reply->readAll().toBase64()}
         };
@@ -319,7 +320,7 @@ void ShellExtensionsServer::parseCustomStateRequest(QLocalSocket *socket, const
         sendEmptyDataAndCloseSession(socket);
         return;
     }
-    
+
     const auto customStateRequestInfo = CustomStateRequestInfo {
         itemFilePath,
         foundFolderAlias