diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,11 +70,11 @@ set (DIR_SHARE ${DIR_PREFIX}/share)
 set (DIR_BIN ${DIR_PREFIX}/bin)
 set (DIR_ETC ${DIR_PREFIX}/etc)
 
 if (DEFINED CMAKE_INSTALL_LIBDIR)
-	set (DIR_LIBRARY ${CMAKE_INSTALL_LIBDIR})
-	set (DIR_LIBRARY_STATIC ${CMAKE_INSTALL_LIBDIR})
+	set (DIR_LIBRARY ${DIR_PREFIX}/${CMAKE_INSTALL_LIBDIR})
+	set (DIR_LIBRARY_STATIC ${DIR_PREFIX}/${CMAKE_INSTALL_LIBDIR})
 endif (DEFINED CMAKE_INSTALL_LIBDIR)
 
 if (DEFINED SHARE_INSTALL_PREFIX)
 	set (DIR_SHARE ${SHARE_INSTALL_PREFIX})
 endif (DEFINED SHARE_INSTALL_PREFIX)