diff --git a/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake b/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake
index fc4344adbd..91ffb54f66 100644
--- a/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake
+++ b/cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake
@@ -113,7 +113,7 @@ 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)