diff --git a/Makefile.am b/Makefile.am
index 10c74653b5d0b3da4b3951bb0e8918648c206151..07184eb19877bab11823e91b1f906ec6a0046a51 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -20,7 +20,7 @@ libnettle_a_SOURCES = aes.c aes.h aes-meta.c arcfour.c arcfour.h arcfour-meta.c\
 		      cbc.c \
 		      des.c des.h desinfo.h desCode.h \
 		      des3.c des-compat.c des-compat.h \
-		      hmac.c hmac-md5.c \
+		      hmac.c hmac-md5.c hmac-sha1.c \
 		      md5.c md5.h md5-compat.c md5-compat.h md5-meta.c \
 		      sha.h sha1.c sha1-meta.c sha256.c sha256-meta.c \
 		      serpent.c serpent.h serpent_sboxes.h serpent-meta.c \
@@ -29,7 +29,7 @@ libnettle_a_SOURCES = aes.c aes.h aes-meta.c arcfour.c arcfour.h arcfour-meta.c\
 		      bignum.h bignum.c \
 		      rsa.h rsa.c rsa_md5.c rsa_sha1.c \
 		      rsa-compat.h rsa-compat.c \
-		      nettle-internal.c
+		      nettle-internal.c nettle-internal.h
 
 libnettle_a_LIBADD = @LIBOBJS@