diff --git a/src/modules/partition/core/PartitionCoreModule.cpp b/src/modules/partition/core/PartitionCoreModule.cpp
index ec999c950..524018687 100644
--- a/src/modules/partition/core/PartitionCoreModule.cpp
+++ b/src/modules/partition/core/PartitionCoreModule.cpp
@@ -283,7 +283,8 @@ PartitionCoreModule::jobs() const
 
     for ( auto info : m_deviceInfos )
     {
-        lst << Calamares::job_ptr( new ClearMountsJob( info->device.data() ) );
+        if ( info->isDirty() )
+            lst << Calamares::job_ptr( new ClearMountsJob( info->device.data() ) );
     }
 
     for ( auto info : m_deviceInfos )