diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f84b6d33..704d18fe9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -392,8 +392,7 @@ unset ( DARWIN CACHE )
 unset ( MACOSX_FRAMEWORK CACHE )
 if ( CMAKE_SYSTEM MATCHES "Darwin" )
   set ( DARWIN 1 )
-  set ( CMAKE_INSTALL_NAME_DIR
-        ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR} )
+  set ( CMAKE_INSTALL_NAME_DIR ${CMAKE_INSTALL_FULL_LIBDIR} )
   if ( enable-coreaudio )
     check_include_file ( CoreAudio/AudioHardware.h COREAUDIO_FOUND )
     if ( COREAUDIO_FOUND )