diff --git a/Common/DefaultOptions.h b/Common/DefaultOptions.h
index 29fafd24edf61db8d833478269168d3c51dc63b3..2a30618c0cac5a6afe2087986cd10c9cd249f435 100644
--- a/Common/DefaultOptions.h
+++ b/Common/DefaultOptions.h
@@ -336,7 +336,7 @@ StringXString PrintOptions_String[] = {
 // NUMBERS
 
 StringXNumber GeneralOptions_Number[] = {
-  { F|O, "AlphaBlending" , opt_general_alpha_blending , 0. ,
+  { F|O, "AlphaBlending" , opt_general_alpha_blending , 1. ,
     "Enable alpha blending (transparency) in post-processing views" },
   { F|O, "Axes" , opt_general_axes , 1. ,
     "Display the axes linked to the model" },