diff --git a/Makefile b/Makefile
index a5d5ddd66737d881c2f479183d72f3a7488c6f0c..16c15e29ba830f156b892b1fbce01205722bf52e 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,8 @@ install-doc:
 	@echo installing docs to ${doc_dir}
 	@mkdir -p ${doc_dir}
 	@cp AUTHORS ChangeLog README TODO ${doc_dir}
-	@chmod 644 ${doc_dir}/*
+	@chmod 644 ${doc_dir}/AUTHORS ${doc_dir}/ChangeLog ${doc_dir}/README \
+		${doc_dir}/TODO
 
 install-bin:
 	@echo installing executables to ${bin_dir}