diff --git a/CMakeLists.txt b/CMakeLists.txt
index 80ecd5d3..60e4d50d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -53,7 +53,7 @@ if(UNIX)
   #
   # use rpath for locating installed libraries
   #
-  set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+  set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
   set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 
   include(CheckIncludeFile)