diff --git a/cmake/qt.toolchain.cmake.in b/cmake/qt.toolchain.cmake.in
index 193e4ba8730..9054e9c4efd 100644
--- a/cmake/qt.toolchain.cmake.in
+++ b/cmake/qt.toolchain.cmake.in
@@ -6,6 +6,8 @@ set(__qt_toolchain_used_variables
     QT_HOST_PATH
     QT_HOST_PATH_CMAKE_DIR
     QT_REQUIRE_HOST_PATH_CHECK
+    QT_ADDITIONAL_PACKAGES_PREFIX_PATH
+    QT_ADDITIONAL_HOST_PACKAGES_PREFIX_PATH
 )
 @init_additional_used_variables@