diff --git a/include/configs/mpc5121ads.h b/include/configs/mpc5121ads.h
index 6e6af62..64ce52d 100644
--- a/include/configs/mpc5121ads.h
+++ b/include/configs/mpc5121ads.h
@@ -370,7 +370,7 @@
 /*
  * IIM - IC Identification Module
  */
-#undef CONFIG_IIM
+#undef CONFIG_FSL_IIM
 
 /*
  * EEPROM configuration