diff --git a/autotests/integration/CMakeLists.txt b/autotests/integration/CMakeLists.txt
index afc77d306e..61884526c6 100644
--- a/autotests/integration/CMakeLists.txt
+++ b/autotests/integration/CMakeLists.txt
@@ -57,7 +57,7 @@ function(integrationTest)
     add_executable(${ARGS_NAME} ${ARGS_SRCS})
     target_link_libraries(${ARGS_NAME} KWinIntegrationTestFramework Qt::Test ${ARGS_LIBS})
     if(${ARGS_BUILTIN_EFFECTS})
-        kcoreaddons_target_static_plugins(${ARGS_NAME} "kwin/effects/plugins")
+        kcoreaddons_target_static_plugins(${ARGS_NAME} NAMESPACE "kwin/effects/plugins")
     endif()
     add_test(NAME kwin-${ARGS_NAME} COMMAND dbus-run-session ${CMAKE_BINARY_DIR}/bin/${ARGS_NAME})
 endfunction()
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6861c3fb30..996c1fe3e3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -327,7 +327,7 @@ target_link_libraries(kwin_x11
 target_compile_definitions(kwin_x11 PRIVATE
     -DTRANSLATION_DOMAIN=\"kwin\"
 )
-kcoreaddons_target_static_plugins(kwin_x11 "kwin/effects/plugins")
+kcoreaddons_target_static_plugins(kwin_x11 NAMESPACE "kwin/effects/plugins")
 
 install(TARGETS kwin EXPORT KWinTargets ${KDE_INSTALL_TARGETS_DEFAULT_ARGS} LIBRARY NAMELINK_SKIP)
 install(TARGETS kwin_x11 ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})
@@ -342,7 +342,7 @@ target_link_libraries(kwin_wayland
 target_compile_definitions(kwin_wayland PRIVATE
     -DTRANSLATION_DOMAIN=\"kwin\"
 )
-kcoreaddons_target_static_plugins(kwin_wayland "kwin/effects/plugins")
+kcoreaddons_target_static_plugins(kwin_wayland NAMESPACE "kwin/effects/plugins")
 
 install(TARGETS kwin_wayland ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})
 if (HAVE_LIBCAP)