diff --git a/include/boost/preprocessor/arithmetic/add.hpp b/include/boost/preprocessor/arithmetic/add.hpp
index 73f1587..275dc67 100644
--- a/include/boost/preprocessor/arithmetic/add.hpp
+++ b/include/boost/preprocessor/arithmetic/add.hpp
@@ -19,7 +19,7 @@
 
 #include <boost/preprocessor/dec.hpp>
 #include <boost/preprocessor/inc.hpp>
-#include <boost/preprocessor/tuple.hpp>
+#include <boost/preprocessor/tuple/elem.hpp>
 #include <boost/preprocessor/while.hpp>
 
 //! Expands to the sum of X and Y.
diff --git a/include/boost/preprocessor/arithmetic/sub.hpp b/include/boost/preprocessor/arithmetic/sub.hpp
index a54e18b..84b53a7 100644
--- a/include/boost/preprocessor/arithmetic/sub.hpp
+++ b/include/boost/preprocessor/arithmetic/sub.hpp
@@ -18,7 +18,7 @@
 */
 
 #include <boost/preprocessor/dec.hpp>
-#include <boost/preprocessor/tuple.hpp>
+#include <boost/preprocessor/tuple/elem.hpp>
 #include <boost/preprocessor/while.hpp>
 
 //! Expands to the difference of X and Y.