diff --git a/src/Mod/Path/CMakeLists.txt b/src/Mod/Path/CMakeLists.txt
index 3b515b4f2a..b30ca0e472 100644
--- a/src/Mod/Path/CMakeLists.txt
+++ b/src/Mod/Path/CMakeLists.txt
@@ -131,6 +131,7 @@ SET(PathScripts_post_SRCS
     PathScripts/post/grbl_post.py
     PathScripts/post/jtech_post.py
     PathScripts/post/linuxcnc_post.py
+    PathScripts/post/mach3_mach4_post.py
     PathScripts/post/opensbp_post.py
     PathScripts/post/opensbp_pre.py
     PathScripts/post/philips_post.py