diff --git a/platform/sky/contiki-conf.h b/platform/sky/contiki-conf.h
index 8eeda6a22..fb4af671d 100644
--- a/platform/sky/contiki-conf.h
+++ b/platform/sky/contiki-conf.h
@@ -95,7 +95,9 @@
 #define SHELL_VARS_CONF_RAM_END 0x2000
 
 #define PROFILE_CONF_ON 0
+#ifndef ENERGEST_CONF_ON
 #define ENERGEST_CONF_ON 1
+#endif /* ENERGEST_CONF_ON */
 
 #define ELFLOADER_CONF_TEXT_IN_ROM 0
 #ifndef ELFLOADER_CONF_DATAMEMORY_SIZE