diff --git a/scripts/cmake/packaging/PackagingMac.cmake b/scripts/cmake/packaging/PackagingMac.cmake
index c37ecd0d527974b84d5f6520fce21350462a5432..ceb5ac1f6948f052cd7284ecab7833d770949858 100644
--- a/scripts/cmake/packaging/PackagingMac.cmake
+++ b/scripts/cmake/packaging/PackagingMac.cmake
@@ -31,11 +31,3 @@ if(OGS_USE_CONAN)
                                                                      EXCLUDE
     )
 endif()
-
-if(OGS_BUILD_GUI)
-    install_qt5_plugin("Qt5::QCocoaIntegrationPlugin" QT_PLUGINS)
-    file(WRITE "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/qt.conf"
-         "[Paths]\nPlugins = ../${_qt_plugin_dir}\n"
-    )
-    install(FILES "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/qt.conf" DESTINATION bin)
-endif()
diff --git a/scripts/cmake/packaging/PackagingWin.cmake b/scripts/cmake/packaging/PackagingWin.cmake
index 5bfface3e054c6e6d55a17dcdfb50d394745e962..4f600e45cb90431be64071e590812790108bb623 100644
--- a/scripts/cmake/packaging/PackagingWin.cmake
+++ b/scripts/cmake/packaging/PackagingWin.cmake
@@ -23,11 +23,3 @@ if(OGS_USE_CONAN)
     file(GLOB MATCHED_FILES "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/*.dll")
     install(FILES ${MATCHED_FILES} DESTINATION bin)
 endif()
-
-if(OGS_BUILD_GUI)
-    install_qt5_plugin("Qt5::QWindowsIntegrationPlugin" QT_PLUGINS)
-    file(WRITE "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/qt.conf"
-         "[Paths]\nPlugins = ../${_qt_plugin_dir}\n"
-    )
-    install(FILES "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/qt.conf" DESTINATION bin)
-endif()