diff --git a/Modules/FindBoost.cmake b/Modules/FindBoost.cmake
index 728dcdfdf..9e6083db2 100644
--- a/Modules/FindBoost.cmake
+++ b/Modules/FindBoost.cmake
@@ -464,6 +464,8 @@ function(_Boost_GUESS_COMPILER_PREFIX _ret)
     set(_boost_COMPILER "-bcb")
   elseif(CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
     set(_boost_COMPILER "-sw")
+  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "XL")
+    set(_boost_COMPILER "-xlc")
   elseif (MINGW)
     if(${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION} VERSION_LESS 1.34)
         set(_boost_COMPILER "-mgw") # no GCC version encoding prior to 1.34