diff --git a/vncviewer/CMakeLists.txt b/vncviewer/CMakeLists.txt
index 36561f8..ecf7b69 100644
--- a/vncviewer/CMakeLists.txt
+++ b/vncviewer/CMakeLists.txt
@@ -7,6 +7,7 @@
   DesktopWindow.cxx
   UserDialog.cxx
   ServerDialog.cxx
+  OptionsDialog.cxx
   Viewport.cxx
   parameters.cxx
   keysym2ucs.c