diff --git a/tests/waku_keystore/utils.nim b/tests/waku_keystore/utils.nim
index c9a85ee37..8af2d2a26 100644
--- a/tests/waku_keystore/utils.nim
+++ b/tests/waku_keystore/utils.nim
@@ -6,9 +6,9 @@ import stint
 import
   waku/[waku_keystore/protocol_types, waku_rln_relay, waku_rln_relay/protocol_types]
 
-func fromStrToBytesBe*(v: string): seq[byte] =
+func fromStrToBytesLe*(v: string): seq[byte] =
   try:
-    return @(hexToUint[256](v).toBytesBE())
+    return @(hexToUint[256](v).toBytesLE())
   except ValueError:
     # this should never happen
     return @[]
@@ -18,10 +18,10 @@ func defaultIdentityCredential*(): IdentityCredential =
   return IdentityCredential(
     idTrapdoor: default(IdentityTrapdoor),
     idNullifier: default(IdentityNullifier),
-    idSecretHash: fromStrToBytesBe(
+    idSecretHash: fromStrToBytesLe(
       "7984f7c054ad7793d9f31a1e9f29eaa8d05966511e546bced89961eb8874ab9"
     ),
-    idCommitment: fromStrToBytesBe(
+    idCommitment: fromStrToBytesLe(
       "51c31de3bff7e52dc7b2eb34fc96813bacf38bde92d27fe326ce5d8296322a7"
     ),
   )
diff --git a/waku/waku_keystore/protocol_types.nim b/waku/waku_keystore/protocol_types.nim
index abea5e2cd..6cfc2f183 100644
--- a/waku/waku_keystore/protocol_types.nim
+++ b/waku/waku_keystore/protocol_types.nim
@@ -26,11 +26,11 @@ type IdentityCredential* = object
   idCommitment*: IDCommitment
 
 proc toUInt256*(idCommitment: IDCommitment): UInt256 =
-  let pk = UInt256.fromBytesBE(idCommitment)
+  let pk = UInt256.fromBytesLE(idCommitment)
   return pk
 
 proc toIDCommitment*(idCommitmentUint: UInt256): IDCommitment =
-  let pk = IDCommitment(@(idCommitmentUint.toBytesBE()))
+  let pk = IDCommitment(@(idCommitmentUint.toBytesLE()))
   return pk
 
 type MembershipIndex* = uint
@@ -53,16 +53,16 @@ proc toIdentityCredentials*(
     try:
       let
         idTrapdoor = IdentityTrapdoor(
-          @(hexToUint[CredentialByteSize](groupKeys[i][0]).toBytesBE())
+          @(hexToUint[CredentialByteSize](groupKeys[i][0]).toBytesLE())
         )
         idNullifier = IdentityNullifier(
-          @(hexToUint[CredentialByteSize](groupKeys[i][1]).toBytesBE())
+          @(hexToUint[CredentialByteSize](groupKeys[i][1]).toBytesLE())
         )
         idSecretHash = IdentitySecretHash(
-          @(hexToUint[CredentialByteSize](groupKeys[i][2]).toBytesBE())
+          @(hexToUint[CredentialByteSize](groupKeys[i][2]).toBytesLE())
         )
         idCommitment =
-          IDCommitment(@(hexToUint[CredentialByteSize](groupKeys[i][3]).toBytesBE()))
+          IDCommitment(@(hexToUint[CredentialByteSize](groupKeys[i][3]).toBytesLE()))
       groupIdCredentials.add(
         IdentityCredential(
           idTrapdoor: idTrapdoor,