diff --git a/src/fs/luks.cpp b/src/fs/luks.cpp
index 3d51077..9637eba 100644
--- a/src/fs/luks.cpp
+++ b/src/fs/luks.cpp
@@ -454,7 +454,7 @@ FileSystem::Type luks::type() const
 
 QString luks::suggestedMapperName(const QString& deviceNode) const
 {
-    return QStringLiteral("luks-") + readUUID(deviceNode);
+    return QStringLiteral("luks-") + readOuterUUID(deviceNode);
 }
 
 QString luks::readLabel(const QString& deviceNode) const
@@ -507,6 +507,11 @@ QString luks::readUUID(const QString& deviceNode) const
 {
     if (m_isCryptOpen && m_innerFs)
         return m_innerFs->readUUID(mapperName(deviceNode));
+    return readOuterUUID(deviceNode);
+}
+
+QString luks::readOuterUUID(const QString &deviceNode) const
+{
     ExternalCommand cmd(QStringLiteral("cryptsetup"),
                         { QStringLiteral("luksUUID"), deviceNode });
     if (cmd.run()) {
diff --git a/src/fs/luks.h b/src/fs/luks.h
index 1fb1573..f6c13f8 100644
--- a/src/fs/luks.h
+++ b/src/fs/luks.h
@@ -149,6 +149,9 @@ public:
     static QString getPayloadOffset(const QString& deviceNode);
     static bool canEncryptType(FileSystem::Type type);
 
+protected:
+    virtual QString readOuterUUID(const QString& deviceNode) const;
+
 public:
     static CommandSupportType m_GetUsed;
     static CommandSupportType m_GetLabel;