--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -83,18 +83,18 @@ ENDIF (NOT QT_FOUND)
 INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
 SET(LIBS ${LIBS} ${Boost_LIBRARIES})
 #boost quirks
-IF (Boost_VERSION LESS 104400)
+IF (Boost_VERSION VERSION_LESS 1.44.00)
     #absolute() was added in 1.44.0, with filesystem v3
     ADD_DEFINITIONS(-DCIFTILIB_BOOST_NO_FSV3)
-ENDIF (Boost_VERSION LESS 104400)
-IF (Boost_VERSION LESS 104800)
+ENDIF (Boost_VERSION VERSION_LESS 1.44.00)
+IF (Boost_VERSION VERSION_LESS 1.48.00)
     #canonical() was added in 1.48.0
     ADD_DEFINITIONS(-DCIFTILIB_BOOST_NO_CANONICAL)
-ENDIF (Boost_VERSION LESS 104800)
-IF (Boost_VERSION LESS 105600)
+ENDIF (Boost_VERSION VERSION_LESS 1.48.00)
+IF (Boost_VERSION VERSION_LESS 1.56.00)
     #try_lexical_cast was added in 1.56.0
     ADD_DEFINITIONS(-DCIFTILIB_BOOST_NO_TRY_LEXICAL)
-ENDIF (Boost_VERSION LESS 105600)
+ENDIF (Boost_VERSION VERSION_LESS 1.56.00)

 #zlib, useful for volume reading
 FIND_PACKAGE(ZLIB)