diff --git a/src/libslic3r/Technologies.hpp b/src/libslic3r/Technologies.hpp
index 1183b51df4..ac92ecd108 100644
--- a/src/libslic3r/Technologies.hpp
+++ b/src/libslic3r/Technologies.hpp
@@ -64,13 +64,6 @@
 
 // Enable rendering seams (and other options) in preview using batched models on systems not supporting OpenGL 3.3
 #define ENABLE_SEAMS_USING_BATCHED_MODELS (1 && ENABLE_SEAMS_USING_MODELS && ENABLE_2_4_0_ALPHA2)
-
-
-//====================
-// 2.4.0.alpha2 techs
-//====================
-#define ENABLE_2_4_0_ALPHA2 1
-
 // Enable fixing the z position of color change, pause print and custom gcode markers in preview
 #define ENABLE_FIX_PREVIEW_OPTIONS_Z (1 && ENABLE_SEAMS_USING_MODELS && ENABLE_FIX_IMPORTING_COLOR_PRINT_VIEW_INTO_GCODEVIEWER && ENABLE_2_4_0_ALPHA2)