diff --git a/src/MixingView.cpp b/src/MixingView.cpp
index 1eebbfe..41374a1 100644
--- a/src/MixingView.cpp
+++ b/src/MixingView.cpp
@@ -653,7 +653,7 @@ View::Cursor MixingView::over (glm::vec2 pos)
     //
     //    Source *s = Mixer::manager().findSource(pick.first);
     Source *s = Mixer::manager().currentSource();
-    if (s != nullptr) {
+    if (s != nullptr && s->ready()) {
 
         s->symbol_->color = glm::vec4( COLOR_HIGHLIGHT_SOURCE, 1.f );
         s->initial_0_->color = glm::vec4( COLOR_HIGHLIGHT_SOURCE, 1.f );