diff --git a/doc/Makefile.am b/doc/Makefile.am
index ade0939..b246228 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -4,7 +4,7 @@ SUBDIRS = \
 EXTRA_DIST = \
 	tinyproxy.conf \
 	HTML_VARIABLES \
-	HTTP_ERROR_CODES \
-	RFC_INFO \
+	http-error-codes.txt \
+	http-rfcs.txt \
 	filter-howto.txt
 
diff --git a/doc/HTTP_ERROR_CODES b/doc/http-error-codes.txt
similarity index 100%
rename from doc/HTTP_ERROR_CODES
rename to doc/http-error-codes.txt
diff --git a/doc/RFC_INFO b/doc/http-rfcs.txt
similarity index 100%
rename from doc/RFC_INFO
rename to doc/http-rfcs.txt