diff --git a/Makefile b/Makefile
index bc72e1d..7a2e856 100644
--- a/Makefile
+++ b/Makefile
@@ -23,11 +23,11 @@ try: main.8xk
 	@echo "CC $<"
 	@$(CC) $(CFLAGS) $< -o obj/$@
 
-main.ihx: $(OBJS)
+obj/main.ihx: $(OBJS)
 	@echo "LD $@"
 	@cd obj && $(CC) -mz80 --no-std-crt0 --code-loc 0x4000 --code-size 0x4000 --xram-loc 0x9D95 --xram-size 0x6060 $^ -o ../$@ && cd ..
 
-main.bin: main.ihx
+main.bin: obj/main.ihx
 	@echo "IHX->BIN $@"
 	@objcopy -Iihex -Obinary $< $@
 	@echo `stat -c %s $@` bytes
diff --git a/lib83/string.h b/lib83/string.h
index e69de29..962b5af 100644
--- a/lib83/string.h
+++ b/lib83/string.h
@@ -0,0 +1,8 @@
+
+#ifndef _STRING_H
+#define _STRING_H
+
+
+
+#endif
+