diff --git a/src/Security/SecCertificate2.cs b/src/Security/SecCertificate2.cs
index 378fd43fc147..c9ff0c6c9f56 100644
--- a/src/Security/SecCertificate2.cs
+++ b/src/Security/SecCertificate2.cs
@@ -35,8 +35,8 @@ public SecCertificate2 (SecCertificate certificate)
 		}
 
 		[DllImport (Constants.SecurityLibrary)]
-		extern static IntPtr sec_identity_copy_ref (IntPtr handle);
+		extern static /* SecCertificateRef */ IntPtr sec_certificate_copy_ref (/* OS_sec_certificate */ IntPtr handle);
 
-		public SecCertificate Certificate => new SecCertificate (sec_identity_copy_ref (GetCheckedHandle ()), owns: true);
+		public SecCertificate Certificate => new SecCertificate (sec_certificate_copy_ref (GetCheckedHandle ()), owns: true);
 	}
 }
diff --git a/src/Security/SecIdentity2.cs b/src/Security/SecIdentity2.cs
index 6d5847224aea..1bef67e3202c 100644
--- a/src/Security/SecIdentity2.cs
+++ b/src/Security/SecIdentity2.cs
@@ -51,7 +51,7 @@ public SecIdentity2 (SecIdentity identity, SecCertificate [] certificates)
 		}
 
 		[DllImport (Constants.SecurityLibrary)]
-		extern static IntPtr sec_identity_copy_ref (IntPtr handle);
+		extern static /* SecIdentityRef */ IntPtr sec_identity_copy_ref (/* OS_sec_identity */ IntPtr handle);
 
 		public SecIdentity Identity => new SecIdentity (sec_identity_copy_ref (GetCheckedHandle ()), owns: true);
 
diff --git a/tests/monotouch-test/Security/CertificateTest.cs b/tests/monotouch-test/Security/CertificateTest.cs
index 80d3eaf70052..8255217c35ec 100644
--- a/tests/monotouch-test/Security/CertificateTest.cs
+++ b/tests/monotouch-test/Security/CertificateTest.cs
@@ -630,5 +630,15 @@ public void GenerateKeyPairTest ()
 				}
 			}
 		}
+
+		[Test]
+		public void X2 ()
+		{
+			TestRuntime.AssertXcodeVersion (10,0);
+			using (var x1 = new SecCertificate (mail_google_com)) 
+			using (var x2 = new SecCertificate2 (x1)) {
+				Assert.That (x2.Certificate.GetCommonName (), Is.EqualTo (x1.GetCommonName ()), "CommonName");
+			}
+		}
 	}
 }
diff --git a/tests/monotouch-test/Security/IdentityTest.cs b/tests/monotouch-test/Security/IdentityTest.cs
index a2d7991cf713..86d7800c991c 100644
--- a/tests/monotouch-test/Security/IdentityTest.cs
+++ b/tests/monotouch-test/Security/IdentityTest.cs
@@ -42,5 +42,15 @@ public void Identity ()
 				Assert.NotNull (id.Certificate, "Certificate");
 			}
 		}
+
+		[Test]
+		public void I2 ()
+		{
+			TestRuntime.AssertXcodeVersion (10,0);
+			using (var i1 = GetIdentity ()) 
+			using (var i2 = new SecIdentity2 (i1)) {
+				Assert.That (i1.Certificate.GetCommonName (), Is.EqualTo (i2.Identity.Certificate.GetCommonName ()), "GetCommonName");
+			}
+		}
 	}
 }
diff --git a/tests/xtro-sharpie/common-Security.ignore b/tests/xtro-sharpie/common-Security.ignore
index 21a95ec85864..96a89143590b 100644
--- a/tests/xtro-sharpie/common-Security.ignore
+++ b/tests/xtro-sharpie/common-Security.ignore
@@ -18,3 +18,11 @@
 ## identical to NSObject version (headers macros) which can be called by CFObject
 !missing-pinvoke! sec_release is not bound
 !missing-pinvoke! sec_retain is not bound
+
+## the following are manualy bound as NativeObject
+!missing-protocol! OS_sec_certificate not bound
+!missing-protocol! OS_sec_identity not bound
+!missing-protocol! OS_sec_object not bound
+!missing-protocol! OS_sec_protocol_metadata not bound
+!missing-protocol! OS_sec_protocol_options not bound
+!missing-protocol! OS_sec_trust not bound
diff --git a/tests/xtro-sharpie/iOS-Security.todo b/tests/xtro-sharpie/iOS-Security.todo
index e159898abc74..a27cee1c2617 100644
--- a/tests/xtro-sharpie/iOS-Security.todo
+++ b/tests/xtro-sharpie/iOS-Security.todo
@@ -1,13 +1,6 @@
-!missing-pinvoke! sec_certificate_copy_ref is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret_with_context is not bound
 !missing-pinvoke! sec_protocol_options_set_challenge_block is not bound
 !missing-pinvoke! sec_protocol_options_set_verify_block is not bound
 !missing-pinvoke! SecCertificateCopyKey is not bound
 !missing-pinvoke! SecTrustEvaluateWithError is not bound
-!missing-protocol! OS_sec_certificate not bound
-!missing-protocol! OS_sec_identity not bound
-!missing-protocol! OS_sec_object not bound
-!missing-protocol! OS_sec_protocol_metadata not bound
-!missing-protocol! OS_sec_protocol_options not bound
-!missing-protocol! OS_sec_trust not bound
diff --git a/tests/xtro-sharpie/macOS-Security.todo b/tests/xtro-sharpie/macOS-Security.todo
index cbeffe9024a1..6d1568461ca0 100644
--- a/tests/xtro-sharpie/macOS-Security.todo
+++ b/tests/xtro-sharpie/macOS-Security.todo
@@ -1,14 +1,7 @@
 !missing-field! kSecCodeInfoRuntimeVersion not bound
-!missing-pinvoke! sec_certificate_copy_ref is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret_with_context is not bound
 !missing-pinvoke! sec_protocol_options_set_challenge_block is not bound
 !missing-pinvoke! sec_protocol_options_set_verify_block is not bound
 !missing-pinvoke! SecCertificateCopyKey is not bound
 !missing-pinvoke! SecTrustEvaluateWithError is not bound
-!missing-protocol! OS_sec_certificate not bound
-!missing-protocol! OS_sec_identity not bound
-!missing-protocol! OS_sec_object not bound
-!missing-protocol! OS_sec_protocol_metadata not bound
-!missing-protocol! OS_sec_protocol_options not bound
-!missing-protocol! OS_sec_trust not bound
diff --git a/tests/xtro-sharpie/tvOS-Security.todo b/tests/xtro-sharpie/tvOS-Security.todo
index e159898abc74..a27cee1c2617 100644
--- a/tests/xtro-sharpie/tvOS-Security.todo
+++ b/tests/xtro-sharpie/tvOS-Security.todo
@@ -1,13 +1,6 @@
-!missing-pinvoke! sec_certificate_copy_ref is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret_with_context is not bound
 !missing-pinvoke! sec_protocol_options_set_challenge_block is not bound
 !missing-pinvoke! sec_protocol_options_set_verify_block is not bound
 !missing-pinvoke! SecCertificateCopyKey is not bound
 !missing-pinvoke! SecTrustEvaluateWithError is not bound
-!missing-protocol! OS_sec_certificate not bound
-!missing-protocol! OS_sec_identity not bound
-!missing-protocol! OS_sec_object not bound
-!missing-protocol! OS_sec_protocol_metadata not bound
-!missing-protocol! OS_sec_protocol_options not bound
-!missing-protocol! OS_sec_trust not bound
diff --git a/tests/xtro-sharpie/watchOS-Security.todo b/tests/xtro-sharpie/watchOS-Security.todo
index e159898abc74..a27cee1c2617 100644
--- a/tests/xtro-sharpie/watchOS-Security.todo
+++ b/tests/xtro-sharpie/watchOS-Security.todo
@@ -1,13 +1,6 @@
-!missing-pinvoke! sec_certificate_copy_ref is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret is not bound
 !missing-pinvoke! sec_protocol_metadata_create_secret_with_context is not bound
 !missing-pinvoke! sec_protocol_options_set_challenge_block is not bound
 !missing-pinvoke! sec_protocol_options_set_verify_block is not bound
 !missing-pinvoke! SecCertificateCopyKey is not bound
 !missing-pinvoke! SecTrustEvaluateWithError is not bound
-!missing-protocol! OS_sec_certificate not bound
-!missing-protocol! OS_sec_identity not bound
-!missing-protocol! OS_sec_object not bound
-!missing-protocol! OS_sec_protocol_metadata not bound
-!missing-protocol! OS_sec_protocol_options not bound
-!missing-protocol! OS_sec_trust not bound