diff --git a/include/fsl_pmic.h b/include/fsl_pmic.h
index fc9e315..132db81 100644
--- a/include/fsl_pmic.h
+++ b/include/fsl_pmic.h
@@ -156,4 +156,5 @@
 #define SW_MODE_PWMPFM		0x0d
 #define SW_MODE_PFMPFM		0x0f
 
+#define MC34708_TRANSFER_SIZE 3
 #endif