diff --git a/dfhack/CMakeLists.txt b/dfhack/CMakeLists.txt
index c00d3218e..42965c3f4 100644
--- a/dfhack/CMakeLists.txt
+++ b/dfhack/CMakeLists.txt
@@ -45,6 +45,7 @@ modules/Buildings.cpp
 modules/Constructions.cpp
 
 modules/Position_C.cpp
+modules/Gui_C.cpp
 )
 
 SET(PROJECT_HDRS_LINUX