diff --git a/blscurve/blst/blst_min_pubkey_sig_core.nim b/blscurve/blst/blst_min_pubkey_sig_core.nim
index 63c30f5..9464cda 100644
--- a/blscurve/blst/blst_min_pubkey_sig_core.nim
+++ b/blscurve/blst/blst_min_pubkey_sig_core.nim
@@ -136,7 +136,7 @@ func publicFromSecret*(pubkey: var PublicKey, seckey: SecretKey): bool =
   ##   an invalid secretkey in the first place.
   if seckey.vec_is_zero():
     return false
-  if not obj.scalar.blst_sk_check().bool:
+  if not seckey.scalar.blst_sk_check().bool:
     return false
   var pk {.noInit.}: blst_p1
   pk.blst_sk_to_pk_in_g1(seckey.scalar)
diff --git a/blscurve/miracl/miracl_min_pubkey_sig_core.nim b/blscurve/miracl/miracl_min_pubkey_sig_core.nim
index 26bc019..3a770c2 100644
--- a/blscurve/miracl/miracl_min_pubkey_sig_core.nim
+++ b/blscurve/miracl/miracl_min_pubkey_sig_core.nim
@@ -134,7 +134,7 @@ func publicFromSecret*(pubkey: var PublicKey, seckey: SecretKey): bool =
   if seckey.intVal.isZilch():
     return false
   {.noSideEffect.}:
-    if obj.intVal.cmp(CURVE_Order) != -1:
+    if seckey.intVal.cmp(CURVE_Order) != -1:
       return false
   pubkey.point = generator1()
   pubkey.point.mul(secKey.intVal)