diff --git a/plugins/qpa/CMakeLists.txt b/plugins/qpa/CMakeLists.txt
--- a/plugins/qpa/CMakeLists.txt
+++ b/plugins/qpa/CMakeLists.txt
@@ -18,6 +18,7 @@
 ecm_qt_declare_logging_category(QPA_SOURCES HEADER logging.h IDENTIFIER KWIN_QPA CATEGORY_NAME kwin_qpa_plugin DEFAULT_SEVERITY Critical)
 
 add_library(KWinQpaPlugin MODULE ${QPA_SOURCES})
+set_target_properties(KWinQpaPlugin PROPERTIES LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/platforms/")
 
 set(QT5PLATFORMSUPPORT_LIBS
      Qt5FontDatabaseSupport::Qt5FontDatabaseSupport