diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 1f27b802..ecf836b4 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -21,7 +21,6 @@ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/geos-config
         PERMISSIONS
         OWNER_READ OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
 
-add_subdirectory(astyle)
 
 # if(UNIX OR MINGW)