diff --git a/src/Mixer.cpp b/src/Mixer.cpp
index 2a129e8..463a33a 100644
--- a/src/Mixer.cpp
+++ b/src/Mixer.cpp
@@ -544,6 +544,7 @@ void Mixer::replaceSource(Source *previous, Source *s)
     SessionLoader loader( session_ );
     loader.applyImageProcessing(*s, SessionVisitor::getClipboard(previous));
     s->setImageProcessingEnabled( previous->imageProcessingEnabled() );
+    s->blendingShader()->blending = previous->blendingShader()->blending;
 
     // delete previous source
     session_->deleteSource(previous);