diff --git a/OpenVPN Adapter/OpenVPNError.h b/OpenVPN Adapter/OpenVPNError.h
index d68a390..6e985d3 100644
--- a/OpenVPN Adapter/OpenVPNError.h	
+++ b/OpenVPN Adapter/OpenVPNError.h	
@@ -9,6 +9,7 @@
 #import <Foundation/Foundation.h>
 
 FOUNDATION_EXPORT NSString * __nonnull const OpenVPNAdapterErrorDomain;
+FOUNDATION_EXPORT NSString * __nonnull const OpenVPNIdentityErrorDomain;
 
 FOUNDATION_EXPORT NSString * __nonnull const OpenVPNAdapterErrorFatalKey;
 FOUNDATION_EXPORT NSString * __nonnull const OpenVPNAdapterErrorMessageKey;
diff --git a/OpenVPN Adapter/OpenVPNError.m b/OpenVPN Adapter/OpenVPNError.m
index 9b85335..b7785b8 100644
--- a/OpenVPN Adapter/OpenVPNError.m	
+++ b/OpenVPN Adapter/OpenVPNError.m	
@@ -9,6 +9,7 @@
 #import <OpenVPNError.h>
 
 NSString * const OpenVPNAdapterErrorDomain = @"me.ss-abramchuk.openvpn-adapter.error-domain";
+NSString * const OpenVPNIdentityErrorDomain = @"me.ss-abramchuk.openvpn-identity.error-domain";
 
 NSString * const OpenVPNAdapterErrorFatalKey = @"me.ss-abramchuk.openvpn-adapter.error-key.fatal";
 NSString * const OpenVPNAdapterErrorMessageKey = @"me.ss-abramchuk.openvpn-adapter.error-key.message";