diff --git a/OpenVPN Tunnel Provider/OpenVPNAdapter.mm b/OpenVPN Tunnel Provider/OpenVPNAdapter.mm
index 1fab8a1..fc439a0 100644
--- a/OpenVPN Tunnel Provider/OpenVPNAdapter.mm	
+++ b/OpenVPN Tunnel Provider/OpenVPNAdapter.mm	
@@ -22,10 +22,10 @@
 #import "OpenVPNAdapter+Client.h"
 #import "OpenVPNAdapter+Provider.h"
 
-NSString *const OpenVPNClientErrorDomain = @"OpenVPNClientErrorDomain";
+NSString * const OpenVPNClientErrorDomain = @"OpenVPNClientErrorDomain";
 
-NSString *const OpenVPNClientErrorFatalKey = @"OpenVPNClientErrorFatalKey";
-NSString *const OpenVPNClientErrorEventKey = @"OpenVPNClientErrorEventKey";
+NSString * const OpenVPNClientErrorFatalKey = @"OpenVPNClientErrorFatalKey";
+NSString * const OpenVPNClientErrorEventKey = @"OpenVPNClientErrorEventKey";
 
 
 @interface OpenVPNAdapter ()
diff --git a/OpenVPN Tunnel Provider/OpenVPNError.h b/OpenVPN Tunnel Provider/OpenVPNError.h
index 01443d5..fd6d964 100644
--- a/OpenVPN Tunnel Provider/OpenVPNError.h	
+++ b/OpenVPN Tunnel Provider/OpenVPNError.h	
@@ -10,8 +10,8 @@
 
 extern NSString * __nonnull const OpenVPNClientErrorDomain;
 
-extern NSString *__nonnull const OpenVPNClientErrorFatalKey;
-extern NSString *__nonnull const OpenVPNClientErrorEventKey;
+extern NSString * __nonnull const OpenVPNClientErrorFatalKey;
+extern NSString * __nonnull const OpenVPNClientErrorEventKey;
 
 typedef NS_ENUM(NSUInteger, OpenVPNError) {
     OpenVPNErrorConfigurationFailure,