diff --git a/CMakeLists.txt b/CMakeLists.txt
index 45e8b868f4..77e77e435e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,6 +21,6 @@ SET(EXECUTABLE_OUTPUT_PATH ${CMake_BINARY_DIR}/Source CACHE PATH
   "Where to put the executables for CMake"
 )
 
-INCLUDE_REGULAR_EXPRESSION("^cm.*")
+INCLUDE_REGULAR_EXPRESSION("^(\\.\\./)?(cm|FLTK|CMake).*")