diff --git a/tests/test_brssl.nim b/tests/test_brssl.nim
index 6f85b2c..178877d 100644
--- a/tests/test_brssl.nim
+++ b/tests/test_brssl.nim
@@ -9,4 +9,4 @@ suite "x509":
     var x509: X509MinimalContext
 
     x509MinimalInit(x509, nil, nil, 0)
-    x509NoanchorInit(xwc, addr x509.vtable)
+    x509NoanchorInit(xwc, X509ClassPointerConst(addr x509.vtable))
diff --git a/tests/test_ec.nim b/tests/test_ec.nim
index be401ee..132aaaa 100644
--- a/tests/test_ec.nim
+++ b/tests/test_ec.nim
@@ -16,5 +16,5 @@ suite "ec":
     var ecimp = ecGetDefault()
     var res = new EcPrivateKey
     check ecKeygen(
-      addr rng.vtable, ecimp, addr res.key, addr res.buffer[0], cint(EC_secp256r1)
+      PrngClassPointerConst(addr rng.vtable), ecimp, addr res.key, addr res.buffer[0], cint(EC_secp256r1)
     ) != 0