diff --git a/lib/private/files/storage/wrapper/encryption.php b/lib/private/files/storage/wrapper/encryption.php
index aade7cd8bb1..2f0c1e35b04 100644
--- a/lib/private/files/storage/wrapper/encryption.php
+++ b/lib/private/files/storage/wrapper/encryption.php
@@ -195,9 +195,13 @@ class Encryption extends Wrapper {
 	public function file_put_contents($path, $data) {
 		// file put content will always be translated to a stream write
 		$handle = $this->fopen($path, 'w');
-		$written = fwrite($handle, $data);
-		fclose($handle);
-		return $written;
+		if (is_resource($handle)) {
+			$written = fwrite($handle, $data);
+			fclose($handle);
+			return $written;
+		}
+
+		return false;
 	}
 
 	/**