diff -rNaud parole-1.0.4/src/misc/parole-stream.c parole-1.0.4-new/src/misc/parole-stream.c
--- parole-1.0.4/src/misc/parole-stream.c	2019-07-27 13:51:51.000000000 +0200
+++ parole-1.0.4-new/src/misc/parole-stream.c	2019-10-05 11:05:52.887860556 +0200
@@ -345,6 +345,9 @@
 
     stream = PAROLE_STREAM(object);
 
+    if (stream->priv->previous_image)
+        return;
+
     if ( stream->priv->image )
         g_object_unref(G_OBJECT(stream->priv->image));