diff --git a/crypto/pkcs8/p5_pbev2.c b/crypto/pkcs8/p5_pbev2.c
index 5ccee40..fec0d86 100644
--- a/crypto/pkcs8/p5_pbev2.c
+++ b/crypto/pkcs8/p5_pbev2.c
@@ -356,7 +356,8 @@
     goto err;
   }
   long iterations = ASN1_INTEGER_get(pbkdf2param->iter);
-  if (iterations <= 0 || iterations > (long) UINT_MAX) {
+  if (iterations <= 0 ||
+      (sizeof(long) > sizeof(unsigned) && iterations > (long)UINT_MAX)) {
     OPENSSL_PUT_ERROR(PKCS8, PKCS8_R_BAD_ITERATION_COUNT);
     goto err;
   }