diff --git a/src/Mixer.cpp b/src/Mixer.cpp
index 4cecf92..7a59ab1 100644
--- a/src/Mixer.cpp
+++ b/src/Mixer.cpp
@@ -1301,11 +1301,13 @@ View *Mixer::view(View::Mode m)
 void Mixer::save(bool with_version)
 {
     if (!session_->filename().empty())
-        saveas(session_->filename(), with_version);
+        saveas(session_->filename(), with_version, true);
 }
 
-void Mixer::saveas(const std::string& filename, bool with_version)
+void Mixer::saveas(const std::string& filename, bool with_version, bool with_thumbail)
 {
+    if (!with_thumbail)
+        session_->resetThumbnail();
     // optional copy of views config
     session_->config(View::MIXING)->copyTransform( mixing_.scene.root() );
     session_->config(View::GEOMETRY)->copyTransform( geometry_.scene.root() );
diff --git a/src/Mixer.h b/src/Mixer.h
index c983806..3d5bd2c 100644
--- a/src/Mixer.h
+++ b/src/Mixer.h
@@ -112,7 +112,7 @@ public:
     inline Session * session () const { return session_; }
     void clear  ();
     void save   (bool with_version = false);
-    void saveas (const std::string& filename, bool with_version = false);
+    void saveas (const std::string& filename, bool with_version = false, bool with_thumbail = false);
     void load   (const std::string& filename);
     void import (const std::string& filename);
     void import (SessionSource *source);