diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5563e19e84..4e26361fc9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,6 +36,7 @@ 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_PYTHON_PACKAGES_PACKAGE OFF)
 
 if(ENABLE_TEST_PLUGINS)
     option(USE_PREBUILT_ZINC_PACKAGE "Use the pre-built version of the Zinc package" ON)