diff --git a/Source/Urho3D/CMakeLists.txt b/Source/Urho3D/CMakeLists.txt
index ae341cb3e..743302069 100644
--- a/Source/Urho3D/CMakeLists.txt
+++ b/Source/Urho3D/CMakeLists.txt
@@ -316,6 +316,7 @@ if (URHO3D_LUA)
         else ()
             set (ALTERNATE_COMMAND CMAKE_COMMAND ${CMAKE_COMMAND} -E env CC=${SAVED_CC} CXX=${SAVED_CXX} CI=$ENV{CI} ${CMAKE_COMMAND})
         endif ()
+        set(CMAKE_DISABLE_SOURCE_CHANGES OFF)
         ExternalProject_Add (tolua++
             SOURCE_DIR ${CMAKE_SOURCE_DIR}/Source/ThirdParty/toluapp/src/bin
             CMAKE_ARGS -D URHO3D_DEPLOYMENT_TARGET=generic -D DEST_RUNTIME_DIR=${CMAKE_BINARY_DIR}/bin/tool -D BAKED_CMAKE_SOURCE_DIR=${CMAKE_SOURCE_DIR} -D URHO3D_UPDATE_SOURCE_TREE=${URHO3D_UPDATE_SOURCE_TREE} -D CMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}