diff --git a/include/os.h b/include/os.h
index af8ffbb40..0246e4de4 100644
--- a/include/os.h
+++ b/include/os.h
@@ -115,12 +115,6 @@ extern _X_EXPORT void ResetWellKnownSockets(void);
 
 extern _X_EXPORT void CloseWellKnownConnections(void);
 
-extern _X_EXPORT const char *ClientAuthorized(ClientPtr /*client */ ,
-                                              unsigned int /*proto_n */ ,
-                                              char * /*auth_proto */ ,
-                                              unsigned int /*string_n */ ,
-                                              char * /*auth_string */ );
-
 typedef void (*NotifyFdProcPtr)(int fd, int ready, void *data);
 
 #define X_NOTIFY_NONE   0x0
diff --git a/os/client_priv.h b/os/client_priv.h
index a74c73fc8..6006c6571 100644
--- a/os/client_priv.h
+++ b/os/client_priv.h
@@ -35,5 +35,10 @@ const char *GetClientCmdArgs(struct _Client *client);
 
 Bool ClientIsLocal(struct _Client *client);
 XID AuthorizationIDOfClient(struct _Client *client);
+const char *ClientAuthorized(struct _Client *client,
+                             unsigned int proto_n,
+                             char *auth_proto,
+                             unsigned int string_n,
+                             char *auth_string);
 
 #endif /* _XSERVER_DIX_CLIENT_PRIV_H */