diff --git a/Makefile.am b/Makefile.am
index 417d9854..26cbda41 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -25,3 +25,5 @@ EXTRA_DIST = include/internal.h include/mempool.h \
 	include/libunwind-ia64.h include/tdep-ia64.h include/ia64/script.h \
 	include/libunwind-hppa.h include/tdep-hppa.h \
 	include/libunwind-x86.h include/tdep-x86.h
+
+DISTCLEANFILES = include/libunwind.h include/tdep.h