diff --git a/packages/types/src/interfaces/babe/definitions.ts b/packages/types/src/interfaces/babe/definitions.ts
index 913df64493..c850fb4b92 100644
--- a/packages/types/src/interfaces/babe/definitions.ts
+++ b/packages/types/src/interfaces/babe/definitions.ts
@@ -11,15 +11,16 @@ export default {
     BabeWeight: 'u64',
     RawBabePreDigest: {
       _enum: {
+        Phantom: 'Null', // index starts at 1... empty slot at 0
         Primary: 'RawBabePreDigestPrimary',
         Secondary: 'RawBabePreDigestSecondary'
       }
     },
     RawBabePreDigestPrimary: {
-      vrfOutput: 'VrfData',
-      vrfProof: 'VrfProof',
       authorityIndex: 'u32', // AuthorityIndex (also in aura)
-      slotNumber: 'SlotNumber'
+      slotNumber: 'SlotNumber',
+      vrfOutput: 'VrfData',
+      vrfProof: 'VrfProof'
     },
     RawBabePreDigestSecondary: {
       authorityIndex: 'u32', // AuthorityIndex (also in aura)
diff --git a/packages/types/src/interfaces/babe/types.ts b/packages/types/src/interfaces/babe/types.ts
index e87ea9f790..f7e057cf90 100644
--- a/packages/types/src/interfaces/babe/types.ts
+++ b/packages/types/src/interfaces/babe/types.ts
@@ -19,11 +19,13 @@ export interface MaybeVrf extends Option<VrfData> {}
 
 /** Enum */
 export interface RawBabePreDigest extends Enum {
-  /** 0:: Primary(RawBabePreDigestPrimary) */
+  /** 0:: Phantom */
+  readonly isPhantom: boolean;
+  /** 1:: Primary(RawBabePreDigestPrimary) */
   readonly isPrimary: boolean;
   /** RawBabePreDigestPrimary */
   readonly asPrimary: RawBabePreDigestPrimary;
-  /** 1:: Secondary(RawBabePreDigestSecondary) */
+  /** 2:: Secondary(RawBabePreDigestSecondary) */
   readonly isSecondary: boolean;
   /** RawBabePreDigestSecondary */
   readonly asSecondary: RawBabePreDigestSecondary;
@@ -43,14 +45,14 @@ export interface RawBabePreDigest0to159 extends Enum {
 
 /** Struct */
 export interface RawBabePreDigestPrimary extends Struct {
-  /** VrfData */
-  readonly vrfOutput: VrfData;
-  /** VrfProof */
-  readonly vrfProof: VrfProof;
   /** u32 */
   readonly authorityIndex: u32;
   /** SlotNumber */
   readonly slotNumber: SlotNumber;
+  /** VrfData */
+  readonly vrfOutput: VrfData;
+  /** VrfProof */
+  readonly vrfProof: VrfProof;
 }
 
 /** Struct */