diff --git a/lib/private/Files/Cache/Cache.php b/lib/private/Files/Cache/Cache.php
index 1cb11c70a4..43e48e5165 100644
--- a/lib/private/Files/Cache/Cache.php
+++ b/lib/private/Files/Cache/Cache.php
@@ -150,6 +150,8 @@ class Cache implements ICache {
 				$data = $this->partial[$file];
 			}
 			return $data;
+		} else if (!$data) {
+			return $data;
 		} else {
 			return self::cacheEntryFromData($data, $this->mimetypeLoader);
 		}