diff --git a/examples/tty/Makefile.am b/examples/tty/Makefile.am
index dbb1aa53..fcbf2af8 100644
--- a/examples/tty/Makefile.am
+++ b/examples/tty/Makefile.am
@@ -32,6 +32,7 @@
 #------------------------------------------------------------------------------
 
 noinst_HEADERS = \
+	serial.c \
 	serial.h \
 	tty.c