diff --git a/src/fs/luks.cpp b/src/fs/luks.cpp
index 9047df0..c9ec79d 100644
--- a/src/fs/luks.cpp
+++ b/src/fs/luks.cpp
@@ -37,6 +37,19 @@
 
 namespace FS
 {
+FileSystem::CommandSupportType luks::m_GetUsed = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_GetLabel = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_Create = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_Grow = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_Shrink = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_Move = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_Check = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_Copy = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_Backup = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_SetLabel = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_UpdateUUID = FileSystem::cmdSupportNone;
+FileSystem::CommandSupportType luks::m_GetUUID = FileSystem::cmdSupportNone;
+
 luks::luks(qint64 firstsector,
            qint64 lastsector,
            qint64 sectorsused,
@@ -45,6 +58,15 @@ luks::luks(qint64 firstsector,
     , m_innerFs(nullptr)
     , m_isCryptOpen(false)
     , m_isMounted(false)
+{
+}
+
+luks::~luks()
+{
+    delete m_innerFs;
+}
+
+void luks::init()
 {
     m_Create = findExternal(QStringLiteral("cryptsetup")) ? cmdSupportFileSystem : cmdSupportNone;
     m_SetLabel = cmdSupportNone;
@@ -60,11 +82,6 @@ luks::luks(qint64 firstsector,
     m_GetUUID = findExternal(QStringLiteral("cryptsetup")) ? cmdSupportFileSystem : cmdSupportNone;
 }
 
-luks::~luks()
-{
-    delete m_innerFs;
-}
-
 bool luks::supportToolFound() const
 {
     m_cryptsetupFound = findExternal(QStringLiteral("cryptsetup")) ? cmdSupportFileSystem : cmdSupportNone;
diff --git a/src/fs/luks.h b/src/fs/luks.h
index d2827fc..2bd9d2f 100644
--- a/src/fs/luks.h
+++ b/src/fs/luks.h
@@ -44,6 +44,7 @@ public:
     virtual ~luks();
 
 public:
+    void init() override;
     qint64 readUsedCapacity(const QString& deviceNode) const override;
 
     CommandSupportType supportGetUsed() const override {
@@ -161,18 +162,18 @@ protected:
     virtual QString readOuterUUID(const QString& deviceNode) const;
 
 public:
-    CommandSupportType m_GetUsed;
-    CommandSupportType m_GetLabel;
-    CommandSupportType m_Create;
-    CommandSupportType m_Grow;
-    CommandSupportType m_Shrink;
-    CommandSupportType m_Move;
-    CommandSupportType m_Check;
-    CommandSupportType m_Copy;
-    CommandSupportType m_Backup;
-    CommandSupportType m_SetLabel;
-    CommandSupportType m_UpdateUUID;
-    CommandSupportType m_GetUUID;
+    static CommandSupportType m_GetUsed;
+    static CommandSupportType m_GetLabel;
+    static CommandSupportType m_Create;
+    static CommandSupportType m_Grow;
+    static CommandSupportType m_Shrink;
+    static CommandSupportType m_Move;
+    static CommandSupportType m_Check;
+    static CommandSupportType m_Copy;
+    static CommandSupportType m_Backup;
+    static CommandSupportType m_SetLabel;
+    static CommandSupportType m_UpdateUUID;
+    static CommandSupportType m_GetUUID;
 
 private:
     mutable FileSystem* m_innerFs;