diff --git a/lib/private/Files/Cache/CacheEntry.php b/lib/private/Files/Cache/CacheEntry.php
index 3c93296ff62d5..af9c012e2de4a 100644
--- a/lib/private/Files/Cache/CacheEntry.php
+++ b/lib/private/Files/Cache/CacheEntry.php
@@ -134,7 +134,7 @@ public function __clone() {
 	}
 
 	public function getUnencryptedSize(): int {
-		if (isset($this->data['unencrypted_size']) && $this->data['unencrypted_size'] > 0) {
+		if ($this->data['encrypted'] && isset($this->data['unencrypted_size']) && $this->data['unencrypted_size'] > 0) {
 			return $this->data['unencrypted_size'];
 		} else {
 			return $this->data['size'] ?? 0;
diff --git a/lib/private/Files/FileInfo.php b/lib/private/Files/FileInfo.php
index 70f700d2d7339..dea9205a94666 100644
--- a/lib/private/Files/FileInfo.php
+++ b/lib/private/Files/FileInfo.php
@@ -210,7 +210,7 @@ public function getSize($includeMounts = true) {
 		if ($includeMounts) {
 			$this->updateEntryfromSubMounts();
 
-			if (isset($this->data['unencrypted_size']) && $this->data['unencrypted_size'] > 0) {
+			if ($this->isEncrypted() && isset($this->data['unencrypted_size']) && $this->data['unencrypted_size'] > 0) {
 				return $this->data['unencrypted_size'];
 			} else {
 				return isset($this->data['size']) ? 0 + $this->data['size'] : 0;
@@ -232,7 +232,7 @@ public function getMTime() {
 	 * @return bool
 	 */
 	public function isEncrypted() {
-		return $this->data['encrypted'];
+		return $this->data['encrypted'] ?? false;
 	}
 
 	/**