diff --git a/Xext/security.c b/Xext/security.c
index 6aab3a342..eef4f693c 100644
--- a/Xext/security.c
+++ b/Xext/security.c
@@ -1114,4 +1114,20 @@ SecurityExtensionInit(INITARGS)
 
     /* Label objects that were created before we could register ourself */
     SecurityLabelInitial();
+
+    /* Register protocol names */
+    RegisterRequestName(extEntry->base, X_SecurityQueryVersion,
+			SECURITY_EXTENSION_NAME ":QueryVersion");
+    RegisterRequestName(extEntry->base, X_SecurityGenerateAuthorization,
+			SECURITY_EXTENSION_NAME ":GenerateAuthorization");
+    RegisterRequestName(extEntry->base, X_SecurityRevokeAuthorization,
+			SECURITY_EXTENSION_NAME ":RevokeAuthorization");
+
+    RegisterEventName(SecurityEventBase + XSecurityAuthorizationRevoked,
+		      SECURITY_EXTENSION_NAME ":AuthorizationRevoked");
+
+    RegisterErrorName(SecurityErrorBase + XSecurityBadAuthorization,
+		      SECURITY_EXTENSION_NAME ":BadAuthorization");
+    RegisterErrorName(SecurityErrorBase + XSecurityBadAuthorizationProtocol,
+		      SECURITY_EXTENSION_NAME ":BadAuthorizationProtocol");
 }