diff --git a/Makefile b/Makefile
index 4dbfd307..a3c29e50 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 all: build run
 
 build:
-	gcc -o bin/picrin src/main.c
+	gcc -o bin/picrin -I./include src/main.c src/state.c
 
 run:
 	bin/picrin