diff --git a/src/fs/filesystem.cpp b/src/fs/filesystem.cpp
index 15b83bc..8941b50 100644
--- a/src/fs/filesystem.cpp
+++ b/src/fs/filesystem.cpp
@@ -426,6 +426,7 @@ bool FileSystem::unmount(Report& report, const QString& deviceNode)
     ExternalCommand umountCmd(  report,
                                 QStringLiteral("umount"),
                               { QStringLiteral("--verbose"),
+                                QStringLiteral("--all-targets"),
                                 deviceNode });
     if ( umountCmd.run() && umountCmd.exitCode() == 0 )
         return true;
diff --git a/src/fs/luks.cpp b/src/fs/luks.cpp
index 8ce28b1..6696ef4 100644
--- a/src/fs/luks.cpp
+++ b/src/fs/luks.cpp
@@ -437,7 +437,7 @@ bool luks::unmount(Report& report, const QString& deviceNode)
     else {
         ExternalCommand unmountCmd( report,
                 QStringLiteral("umount"),
-                { QStringLiteral("--verbose"), mapperNode });
+                { QStringLiteral("--verbose"), QStringLiteral("--all-targets"), mapperNode });
         if (unmountCmd.run() && unmountCmd.exitCode() == 0)
         {
             m_isMounted = false;