--- src/gui/CMakeLists.txt.orig	2022-01-14 18:52:21 UTC
+++ src/gui/CMakeLists.txt
@@ -179,7 +179,7 @@ target_sources(CsGui
 
 target_include_directories(CsGui
    PUBLIC
-   $<INSTALL_INTERFACE:include/QtGui>
+   ${CMAKE_INSTALL_INCLUDEDIR}/QtGui
    ${OPENGL_INCLUDE_DIR}
 )
 
@@ -215,8 +215,8 @@ install(
    TARGETS CsGui
    EXPORT CopperSpiceLibraryTargets ${INSTALL_TARGETS_DEFAULT_ARGS}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}${CS_NAMESPACE_DIRECTORY}
+   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}${CS_NAMESPACE_DIRECTORY}
 )
 
 install(
