diff --git a/src/fs/luks.cpp b/src/fs/luks.cpp
index 669f888..59fe16d 100644
--- a/src/fs/luks.cpp
+++ b/src/fs/luks.cpp
@@ -62,6 +62,8 @@ luks::luks(qint64 firstsector,
     , m_isCryptOpen(false)
     , m_cryptsetupFound(m_Create != cmdSupportNone)
     , m_isMounted(false)
+    , m_KeySize(-1)
+    , m_PayloadOffset(-1)
 {
 }