diff --git a/make/defs.mk b/make/defs.mk
index 25952a2d..f2fe07fb 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -398,7 +398,7 @@ INSTALLED_HDR         += $(addprefix $(INSTALL_HDRDIR)/,$(SRC_H))
 
 # -- DOC
 INSTALLATION_FILE_TYPES += DOC
-DOCS                  += $(wildcard VERSION README* CHANGES TODO* LICENSE AUTHORS CREDITS *.pdf *.txt *.html)
+DOCS                  += $(wildcard VERSION README* CHANGES TODO* LICENSE AUTHORS CREDITS RELEASES *.pdf *.txt *.html)
 DOCSUBDIRS            += $(wildcard html tex info examples src)
 
 BUILD_DOCDIR          ?= $(TOPDIR)/doc