diff --git a/benchmarks/zkalc.nim b/benchmarks/zkalc.nim
index c4308ca4..fb452d66 100644
--- a/benchmarks/zkalc.nim
+++ b/benchmarks/zkalc.nim
@@ -32,6 +32,9 @@ import
   # Third-party
   jsony, cliche
 
+# Workarounds generic sandwich bug in 1.6.x
+from constantine/named/algebras import matchingBigInt, matchingOrderBigInt, getLimbs2x
+
 type
   ZkalcBenchDetails = object
     `range`: seq[int]
@@ -110,7 +113,7 @@ template bench(body: untyped): AggStats =
 
       # We can store integers up to 2⁵³ in a float64 without loss of precision (see also ulp)
       # 1 billion is ~ 2³⁰, so you would need 2²³ seconds = 8388608s = 13 weeks 6 days 2 hours 10 minutes 8 seconds
-      stats.push(elapsedNs)
+      stats.push(elapsedNs.int)
 
     (stats, batchSize)
 
diff --git a/constantine/named/zoo_subgroups.nim b/constantine/named/zoo_subgroups.nim
index 2a9e584e..2942ade0 100644
--- a/constantine/named/zoo_subgroups.nim
+++ b/constantine/named/zoo_subgroups.nim
@@ -33,7 +33,7 @@ export
 func clearCofactor*[EC](P: var EC) {.inline.} =
   ## Clear the cofactor of a point on the curve
   ## From a point on the curve, returns a point on the subgroup of order r
-  when EC.getName() in {BN254_Nogami, BN254_Snarks, BLS12_377, BLS12_381}:
+  when EC.F.Name in {BN254_Nogami, BN254_Snarks, BLS12_377, BLS12_381}:
     P.clearCofactorFast()
   else:
     P.clearCofactorReference()