diff --git a/include/configs/mecp5123.h b/include/configs/mecp5123.h
index 083184316..ed3e70f67 100644
--- a/include/configs/mecp5123.h
+++ b/include/configs/mecp5123.h
@@ -187,6 +187,8 @@
 #define CONFIG_SYS_MAX_NAND_DEVICE      1
 #define NAND_MAX_CHIPS                  CONFIG_SYS_MAX_NAND_DEVICE
 
+#define	CONFIG_SYS_64BIT_VSPRINTF	/* needed for nand_util.c */
+
 /*
  * Configuration parameters for MPC5121 NAND driver
  */
diff --git a/include/configs/mpc5121ads.h b/include/configs/mpc5121ads.h
index 45a004eb2..852d7b109 100644
--- a/include/configs/mpc5121ads.h
+++ b/include/configs/mpc5121ads.h
@@ -211,6 +211,8 @@
 #define NAND_MAX_CHIPS                  CONFIG_SYS_MAX_NAND_DEVICE
 #define CONFIG_SYS_NAND_SELECT_DEVICE	/* driver supports mutipl. chips */
 
+#define	CONFIG_SYS_64BIT_VSPRINTF	/* needed for nand_util.c */
+
 /*
  * Configuration parameters for MPC5121 NAND driver
  */