diff --git a/CMakeLists.txt b/CMakeLists.txt
index 768c7229..0f8a1566 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -473,13 +473,13 @@ if(CMAKE_INSTALL_PREFIX)
     include(GNUInstallDirs)
 endif()
 # install files
-if(CMAKE_INSTALL_PREFIX AND DEFINED CMAKE_INSTALL_FULL_BINDIR)
-    install(TARGETS upx DESTINATION "${CMAKE_INSTALL_FULL_BINDIR}")
+if(CMAKE_INSTALL_PREFIX AND DEFINED CMAKE_INSTALL_BINDIR)
+    install(TARGETS upx DESTINATION "${CMAKE_INSTALL_BINDIR}")
     install(FILES
         COPYING LICENSE NEWS README doc/THANKS.txt doc/upx-doc.html doc/upx-doc.txt
-        DESTINATION "${CMAKE_INSTALL_FULL_DOCDIR}"
+        DESTINATION "${CMAKE_INSTALL_DOCDIR}"
     )
-    install(FILES doc/upx.1 DESTINATION "${CMAKE_INSTALL_FULL_MANDIR}/man1")
+    install(FILES doc/upx.1 DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
 endif()
 
 endif() # UPX_CONFIG_CMAKE_DISABLE_INSTALL