diff --git a/src/plasp/pddl/TypePrimitive.cpp b/src/plasp/pddl/TypePrimitive.cpp
index a5ed203..9f25166 100644
--- a/src/plasp/pddl/TypePrimitive.cpp
+++ b/src/plasp/pddl/TypePrimitive.cpp
@@ -2,8 +2,6 @@
 
 #include <algorithm>
 
-#include <boost/variant.hpp>
-
 #include <plasp/pddl/Context.h>
 #include <plasp/pddl/Identifier.h>