diff --git a/CMakeLists.txt b/CMakeLists.txt
index f60caa1..9ff2211 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,13 +15,20 @@ set (WEBSOCKETPP_VERSION ${WEBSOCKETPP_MAJOR_VERSION}.${WEBSOCKETPP_MINOR_VERSIO
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
+get_property(LIB64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS)
+if ("${LIB64}" STREQUAL "TRUE")
+  set(LIBSUFFIX 64)
+else()
+  set(LIBSUFFIX "")
+endif()
+
 set(INSTALL_INCLUDE_DIR include CACHE PATH "Installation directory for header files")
+set(LIB_INSTALL_DIR "lib${LIB_SUFFIX}")
 if (WIN32 AND NOT CYGWIN)
-  set (DEF_INSTALL_CMAKE_DIR cmake)
+  set (INSTALL_CMAKE_DIR cmake)
 else ()
-  set (DEF_INSTALL_CMAKE_DIR lib/cmake/websocketpp)
+  set (INSTALL_CMAKE_DIR ${LIB_INSTALL_DIR}/cmake/websocketpp)
 endif ()
-set (INSTALL_CMAKE_DIR ${DEF_INSTALL_CMAKE_DIR} CACHE PATH "Installation directory for CMake files")
 
 # Make relative paths absolute (needed later on)
 foreach (p INCLUDE CMAKE)