diff --git a/cmake/QtPublicTargetsHelpers.cmake b/cmake/QtPublicTargetsHelpers.cmake
index 2e5eb564f4d..0a414f379ac 100644
--- a/cmake/QtPublicTargetsHelpers.cmake
+++ b/cmake/QtPublicTargetsHelpers.cmake
@@ -4,6 +4,7 @@ function(qt_internal_setup_public_platform_target)
     ## QtPlatform Target:
     add_library(Platform INTERFACE)
     add_library(Qt::Platform ALIAS Platform)
+    add_library(${INSTALL_CMAKE_NAMESPACE}::Platform ALIAS Platform)
     target_include_directories(Platform
         INTERFACE
         $<BUILD_INTERFACE:${QT_PLATFORM_DEFINITION_DIR_ABSOLUTE}>