diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e8aefb6c..8c579ea7d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,11 +23,11 @@ option(BUILD_OPENMW             "Build OpenMW" ON)
 option(BUILD_LAUNCHER           "Build Launcher" ON)
 option(BUILD_WIZARD             "Build Installation Wizard" ON)
 option(BUILD_MWINIIMPORTER      "Build MWiniImporter" ON)
-option(BUILD_OPENCS             "Build OpenMW Construction Set" ON)
-option(BUILD_ESSIMPORTER        "Build ESS (Morrowind save game) importer" ON)
-option(BUILD_BSATOOL            "Build BSA extractor" ON)
-option(BUILD_ESMTOOL            "Build ESM inspector" ON)
-option(BUILD_NIFTEST            "Build nif file tester" ON)
+option(BUILD_OPENCS             "Build OpenMW Construction Set" OFF)
+option(BUILD_ESSIMPORTER        "Build ESS (Morrowind save game) importer" OFF)
+option(BUILD_BSATOOL            "Build BSA extractor" OFF)
+option(BUILD_ESMTOOL            "Build ESM inspector" OFF)
+option(BUILD_NIFTEST            "Build nif file tester" OFF)
 option(BUILD_DOCS               "Build documentation." OFF )
 option(BUILD_WITH_CODE_COVERAGE "Enable code coverage with gconv" OFF)
 option(BUILD_UNITTESTS          "Enable Unittests with Google C++ Unittest" OFF)