diff --git a/legacy/eio/Makefile.am b/legacy/eio/Makefile.am
index ef797b36eb..d0f3ba64f7 100644
--- a/legacy/eio/Makefile.am
+++ b/legacy/eio/Makefile.am
@@ -49,7 +49,6 @@ m4/ulonglong.m4
 EXTRA_DIST = \
 AUTHORS \
 COPYING \
-COPYING-PLAIN \
 autogen.sh \
 eio.pc.in