diff --git a/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake b/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake
index c0d98a2517..3274727a07 100644
--- a/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake
+++ b/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake
@@ -112,7 +112,7 @@ macro(InitializeFreeCADBuildOptions)
     option(BUILD_MATERIAL "Build the FreeCAD material module" ON)
     option(BUILD_MESH "Build the FreeCAD mesh module" ON)
     option(BUILD_MESH_PART "Build the FreeCAD mesh part module" ON)
-    option(BUILD_FLAT_MESH "Build the FreeCAD flat mesh module" OFF)
+    option(BUILD_FLAT_MESH "Build the FreeCAD flat mesh module" ON)
     option(BUILD_OPENSCAD "Build the FreeCAD openscad module" ON)
     option(BUILD_PART "Build the FreeCAD part module" ON)
     option(BUILD_PART_DESIGN "Build the FreeCAD part design module" ON)