diff --git a/doc/Makefile.am b/doc/Makefile.am
index 964db2a08..ca047dff9 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -58,6 +58,7 @@ doxygen: krb5.dxy ntlm.dxy hx509.dxy hcrypto.dxy wind.dxy
 heimdal_TEXINFOS = \
 	ack.texi \
 	apps.texi \
+	copyright.texi \
 	heimdal.texi \
 	install.texi \
 	intro.texi \