diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ce278839050e..ca40fc0c7c48 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -934,6 +934,7 @@ set(wesnoth-main_SRC
 	scripting/lua_common.cpp
 	scripting/lua_cpp_function.cpp
 	scripting/lua_fileops.cpp
+	scripting/lua_formula_bridge.cpp
 	scripting/lua_gui2.cpp
 	scripting/lua_kernel_base.cpp
 	scripting/lua_map_location_ops.cpp
diff --git a/src/SConscript b/src/SConscript
index c4d977a51966..d7bd2b41c1a1 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -511,6 +511,7 @@ wesnoth_sources = Split("""
     scripting/lua_common.cpp
     scripting/lua_cpp_function.cpp
     scripting/lua_fileops.cpp
+    scripting/lua_formula_bridge.cpp
     scripting/lua_gui2.cpp
     scripting/lua_kernel_base.cpp
     scripting/lua_map_location_ops.cpp