diff --git a/Makefile b/Makefile
index fe764e7..344d66b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,10 @@
 all: smallchat-server smallchat-client
 CFLAGS=-O2 -Wall -W -std=c99
 
-smallchat-server: smallchat-server.c chatlib.c
+smallchat-server: smallchat-server.c chatlib.c chatlib.h
 	$(CC) smallchat-server.c chatlib.c -o smallchat-server $(CFLAGS)
 
-smallchat-client: smallchat-client.c chatlib.c
+smallchat-client: smallchat-client.c chatlib.c chatlib.h
 	$(CC) smallchat-client.c chatlib.c -o smallchat-client $(CFLAGS)
 
 clean: