diff --git a/src/App/CMakeLists.txt b/src/App/CMakeLists.txt
index bd275302ab..d97f8cd8d7 100644
--- a/src/App/CMakeLists.txt
+++ b/src/App/CMakeLists.txt
@@ -16,8 +16,6 @@ IF(DOCDIR)
     add_definitions(-DDOCDIR="${DOCDIR}")
 ENDIF(DOCDIR)
 
-add_definitions(-DBOOST_${Boost_VERSION})
-
 #if you want to use the old DAG structure uncomment this line
 #add_definitions(-DUSE_OLD_DAG)