diff --git a/dlls/crypt32/tests/cert.c b/dlls/crypt32/tests/cert.c
index 415f9c78dd4..a9893468846 100644
--- a/dlls/crypt32/tests/cert.c
+++ b/dlls/crypt32/tests/cert.c
@@ -3143,7 +3143,8 @@ static void testGetPublicKeyLength(void)
      ret, GetLastError());
     SetLastError(0xdeadbeef);
     ret = CertGetPublicKeyLength(X509_ASN_ENCODING, &info);
-    ok(ret == 56, "Expected length 56, got %d\n", ret);
+    ok(ret == 56 || broken(ret == 0 && GetLastError() == NTE_BAD_LEN) /* Win7 */,
+       "Expected length 56, got %d\n", ret);
     /* An RSA key with the DH OID */
     info.Algorithm.pszObjId = oid_rsa_dh;
     SetLastError(0xdeadbeef);
@@ -3157,12 +3158,14 @@ static void testGetPublicKeyLength(void)
     info.Algorithm.pszObjId = oid_rsa_rsa;
     SetLastError(0xdeadbeef);
     ret = CertGetPublicKeyLength(X509_ASN_ENCODING, &info);
-    ok(ret == 56, "Expected length 56, got %d\n", ret);
+    ok(ret == 56 || broken(ret == 0 && GetLastError() == NTE_BAD_LEN) /* Win7 */,
+       "Expected length 56, got %d\n", ret);
     /* With the RSA OID and a message encoding */
     info.Algorithm.pszObjId = oid_rsa_rsa;
     SetLastError(0xdeadbeef);
     ret = CertGetPublicKeyLength(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, &info);
-    ok(ret == 56, "Expected length 56, got %d\n", ret);
+    ok(ret == 56 || broken(ret == 0 && GetLastError() == NTE_BAD_LEN) /* Win7 */,
+       "Expected length 56, got %d\n", ret);
 }
 
 START_TEST(cert)