diff --git a/src/libslic3r/Technologies.hpp b/src/libslic3r/Technologies.hpp
index 1d8f163dc..d6b00576f 100644
--- a/src/libslic3r/Technologies.hpp
+++ b/src/libslic3r/Technologies.hpp
@@ -34,7 +34,7 @@
 //====================
 // 2.2.0.alpha1 techs
 //====================
-#define ENABLE_2_2_0_ALPHA1 0
+#define ENABLE_2_2_0_ALPHA1 1
 
 // Enable thumbnail generator
 // When removing this technology, remove it also from stable branch,