diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3df0d7eb6b..581fcc8795 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,8 +33,6 @@ option(USE_PREBUILT_QSCINTILLA_PACKAGE "Use the pre-built version of the QScinti
 option(USE_PREBUILT_QWT_PACKAGE "Use the pre-built version of the Qwt package" ON)
 option(USE_PREBUILT_SUNDIALS_PACKAGE "Use the pre-built version of the SUNDIALS package" ON)
 option(USE_PREBUILT_ZLIB_PACKAGE "Use the pre-built version of the zlib package" ON)
-set(USE_PREBUILT_QSCINTILLA_PACKAGE OFF)
-set(USE_PREBUILT_QWT_PACKAGE OFF)
 
 if(ENABLE_TEST_PLUGINS)
     option(USE_PREBUILT_ZINC_PACKAGE "Use the pre-built version of the Zinc package" ON)