diff --git a/ssl/CMakeLists.txt b/ssl/CMakeLists.txt
index a72f759..7dbdda1 100644
--- a/ssl/CMakeLists.txt
+++ b/ssl/CMakeLists.txt
@@ -40,6 +40,7 @@ set(
 	t1_lib.c
 	tls13_buffer.c
 	tls13_client.c
+	tls13_error.c
 	tls13_handshake.c
 	tls13_handshake_msg.c
 	tls13_key_schedule.c
diff --git a/ssl/Makefile.am b/ssl/Makefile.am
index b4d549d..0c82ce0 100644
--- a/ssl/Makefile.am
+++ b/ssl/Makefile.am
@@ -49,6 +49,7 @@ libssl_la_SOURCES += t1_enc.c
 libssl_la_SOURCES += t1_lib.c
 libssl_la_SOURCES += tls13_buffer.c
 libssl_la_SOURCES += tls13_client.c
+libssl_la_SOURCES += tls13_error.c
 libssl_la_SOURCES += tls13_handshake.c
 libssl_la_SOURCES += tls13_handshake_msg.c
 libssl_la_SOURCES += tls13_key_schedule.c
@@ -56,7 +57,6 @@ libssl_la_SOURCES += tls13_lib.c
 libssl_la_SOURCES += tls13_record.c
 libssl_la_SOURCES += tls13_record_layer.c
 libssl_la_SOURCES += tls13_server.c
-libssl_la_SOURCES += tls13_error.c
 
 noinst_HEADERS = bytestring.h
 noinst_HEADERS += srtp.h