diff --git a/Makefile.am b/Makefile.am
index 4587ce33b23707b70faf10d7464a48df78875e0b..7360755263afcad6707c2ed3be8948dc0db89b74 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -7,13 +7,14 @@ libnettleincludedir = $(includedir)/nettle
 lib_LIBRARIES = libnettle.a
 libnettleinclude_HEADERS = aes.h arcfour.h blowfish.h cast128.h des.h \
 			   serpent.h twofish.h \
-			   md5.h md5-compat.h sha1.h
+			   md5.h md5-compat.h sha1.h \
+			   cbc.h
 
 libnettle_a_SOURCES = aes.c aes.h arcfour.c arcfour.h \
 		      cast128.c cast128.h cast128_sboxes.h \
 		      blowfish.h blowfish.c \
 		      cbc.c \
-		      des.c des.h desinfo.h desCode.h \
+		      des.c des.h des3.c desinfo.h desCode.h \
 		      md5.c md5.h md5-compat.c md5-compat.h \
 		      sha1.c sha1.h \
 		      serpent.c serpent.h serpent_sboxes.h \