diff --git a/Makefile b/Makefile
index 934fd51a..0a1716ae 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@
 TOPDIR=$(shell pwd)
 OBJDIR=obj
 
-CPPFLAGS=-I$(TOPDIR)/$(OBJ) -I$(TOPDIR)
+CPPFLAGS=-I$(TOPDIR)/$(OBJDIR) -I$(TOPDIR)
 OPT=-O2
 DEBUG=-g#gdb
 CFLAGS=$(OPT) $(DEBUG) -Wall -W -Wstrict-prototypes -Wno-unused -Wno-parentheses