diff --git a/lib/private/files/storage/wrapper/permissionsmask.php b/lib/private/files/storage/wrapper/permissionsmask.php
index 50c3f2a626..8d40d02363 100644
--- a/lib/private/files/storage/wrapper/permissionsmask.php
+++ b/lib/private/files/storage/wrapper/permissionsmask.php
@@ -66,7 +66,7 @@ class PermissionsMask extends Wrapper {
 	}
 
 	public function isSharable($path) {
-		return $this->checkMask(Constants::PERMISSION_SHARE) and parent::isSharable($parm);
+		return $this->checkMask(Constants::PERMISSION_SHARE) and parent::isSharable($path);
 	}
 
 	public function getPermissions($path) {
diff --git a/tests/lib/files/storage/storage.php b/tests/lib/files/storage/storage.php
index fcd7f73dcd..d381b4cdf4 100644
--- a/tests/lib/files/storage/storage.php
+++ b/tests/lib/files/storage/storage.php
@@ -573,4 +573,29 @@ abstract class Storage extends \Test\TestCase {
 		$this->assertSameAsLorem($target);
 		$this->assertTrue($this->instance->file_exists($source), $source . ' was deleted');
 	}
+
+	public function testIsCreatable() {
+		$this->instance->mkdir('source');
+		$this->assertTrue($this->instance->isCreatable('source'));
+	}
+
+	public function testIsReadable() {
+		$this->instance->mkdir('source');
+		$this->assertTrue($this->instance->isReadable('source'));
+	}
+
+	public function testIsUpdatable() {
+		$this->instance->mkdir('source');
+		$this->assertTrue($this->instance->isUpdatable('source'));
+	}
+
+	public function testIsDeletable() {
+		$this->instance->mkdir('source');
+		$this->assertTrue($this->instance->isDeletable('source'));
+	}
+
+	public function testIsShareable() {
+		$this->instance->mkdir('source');
+		$this->assertTrue($this->instance->isSharable('source'));
+	}
 }