diff --git a/backend/handlers/onlyoffice.go b/backend/handlers/onlyoffice.go
index 87357e5..67a2fad 100644
--- a/backend/handlers/onlyoffice.go
+++ b/backend/handlers/onlyoffice.go
@@ -335,7 +335,7 @@ func (h *OnlyOfficeHandler) ListOfficeFiles(c *fiber.Ctx) error {
 	var results []OfficeFile
 
 	checksums := make(map[string]string)
-	rows, err := h.DB.Query("SELECT path, checksum FROM files WHERE checksum != '' AND is_trashed = 0")
+	rows, err := h.DB.Query("SELECT path, checksum FROM files WHERE checksum IS NOT NULL AND checksum != '' AND IFNULL(is_trashed, 0) = 0")
 	if err == nil {
 		defer rows.Close()
 		for rows.Next() {
diff --git a/frontend/src/components/ThumbnailImage.tsx b/frontend/src/components/ThumbnailImage.tsx
index f25b15b..cede2e1 100644
--- a/frontend/src/components/ThumbnailImage.tsx
+++ b/frontend/src/components/ThumbnailImage.tsx
@@ -32,7 +32,7 @@ export default function ThumbnailImage({ checksum, fallbackIcon, downloadToken,
       key={key}
       src={downloadToken ? `${api.getThumbnailUrl(checksum, downloadToken)}${errorCount > 0 ? `&t=${key}` : ''}` : ''}
       alt=""
-      className={`object-contain ${docType ? 'w-full h-full object-cover mix-blend-multiply' : 'w-full h-full'}`}
+      className={`object-contain ${docType ? 'w-full h-full mix-blend-multiply' : 'w-full h-full'}`}
       style={{ display: showFallback ? 'none' : 'block' }}
       onError={(e) => {
         if (errorCount < 20) {