diff --git a/include/libtorrent/Makefile.am b/include/libtorrent/Makefile.am
index 79fba7fe4..de342e85c 100644
--- a/include/libtorrent/Makefile.am
+++ b/include/libtorrent/Makefile.am
@@ -118,6 +118,9 @@ nobase_include_HEADERS = \
   xml_parse.hpp                \
   \
   $(GEOIP_H) \
+  tommath.h \
+  tommath_class.h \
+  tommath_superclass.h \
   \
   aux_/session_impl.hpp        \
   \