diff --git a/Mixer.cpp b/Mixer.cpp
index a82b4a2..6b5ce14 100644
--- a/Mixer.cpp
+++ b/Mixer.cpp
@@ -566,22 +566,36 @@ void Mixer::deselect(Source *s)
 
 void Mixer::deleteSelection()
 {
-    // get clones first : this way we store the history of deletion in the right order
-    SourceList selection_clones_;
-    for ( auto sit = selection().begin(); sit != selection().end(); sit++ ) {
-        CloneSource *clone = dynamic_cast<CloneSource *>(*sit);
-        if (clone)
-            selection_clones_.push_back(clone);
-    }
-    // delete all clones
-    while ( !selection_clones_.empty() ) {
-        deleteSource( selection_clones_.front());
-        selection_clones_.pop_front();
-    }
-    // empty the selection
-    while ( !selection().empty() )
-        deleteSource( selection().front() ); // this also remove element from selection()
+    // number of sources in selection
+    int N = selection().size();
+    // ignore if selection empty
+    if (N > 0) {
 
+        // adapt Action::manager undo action depending on case
+        std::string undomessage;
+        if (N > 1)
+            undomessage = std::to_string(N) + std::string(" sources deleted");
+        else
+            undomessage = selection().front()->name() + std::string(" deleted");
+
+        // get clones first : this way we store the history of deletion in the right order
+        SourceList selection_clones_;
+        for ( auto sit = selection().begin(); sit != selection().end(); sit++ ) {
+            CloneSource *clone = dynamic_cast<CloneSource *>(*sit);
+            if (clone)
+                selection_clones_.push_back(clone);
+        }
+        // delete all clones
+        while ( !selection_clones_.empty() ) {
+            deleteSource( selection_clones_.front(), false);// this also removes element from selection()
+            selection_clones_.pop_front();
+        }
+        // empty the selection
+        while ( !selection().empty() )
+            deleteSource( selection().front(), false ); // this also removes element from selection()
+
+        Action::manager().store( undomessage );
+    }
 }
 
 void Mixer::groupSelection()