diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index b898a5a8a3..ab7178b921 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -1,9 +1,11 @@
 INCLUDE (${CMAKE_ROOT}/Modules/FindFLTK.cmake)
 
-
 IF(FLTK_LIBRARY)
   IF(FLTK_INCLUDE_PATH)
-    SUBDIRS(FLTKDialog)
+    OPTION(BUILD_FLTK_GUI "Build FLTK CMake GUI." "ON")
+    IF(BUILD_FLTK_GUI)
+      SUBDIRS(FLTKDialog)
+    ENDIF(BUILD_FLTK_GUI)
   ENDIF(FLTK_INCLUDE_PATH)
 ENDIF(FLTK_LIBRARY)