diff --git a/examples/platform-specific/zoul/at-test/Makefile b/examples/platform-specific/zoul/at-test/Makefile
index 8715c949f..04d282aaa 100644
--- a/examples/platform-specific/zoul/at-test/Makefile
+++ b/examples/platform-specific/zoul/at-test/Makefile
@@ -2,5 +2,5 @@ CONTIKI_PROJECT = at-master-test
 MODULES = os/services/at-master
 all: $(CONTIKI_PROJECT)
 
-CONTIKI = ../../..
+CONTIKI = ../../../..
 include $(CONTIKI)/Makefile.include