diff --git a/src/fs/luks.cpp b/src/fs/luks.cpp
index ae5864d..c9daa08 100644
--- a/src/fs/luks.cpp
+++ b/src/fs/luks.cpp
@@ -250,11 +250,12 @@ bool luks::cryptOpen(const QString& deviceNode)
         return false;
     }
 
+    QString passphrase = dlg->luksPassphrase().text();
     std::vector<QString> commands;
     commands.push_back(QStringLiteral("echo"));
     commands.push_back(QStringLiteral("cryptsetup"));
     std::vector<QStringList> args;
-    args.push_back({ dlg->luksPassphrase().text() });
+    args.push_back({ passphrase });
     args.push_back({ QStringLiteral("luksOpen"),
                      deviceNode,
                      QStringLiteral("luks-") + readUUID(deviceNode) });
@@ -278,7 +279,10 @@ bool luks::cryptOpen(const QString& deviceNode)
     m_isCryptOpen = (m_innerFs != nullptr);
 
     if (m_isCryptOpen)
+    {
+        m_passphrase = passphrase;
         return true;
+    }
     return false;
 }
 
@@ -306,6 +310,8 @@ bool luks::cryptClose(const QString& deviceNode)
     delete m_innerFs;
     m_innerFs = nullptr;
 
+    m_passphrase.clear();
+
     m_isCryptOpen = (m_innerFs != nullptr);
 
     if (!m_isCryptOpen)