diff --git a/Xext/sync.c b/Xext/sync.c
index 81b0cc4aa..750e0db94 100644
--- a/Xext/sync.c
+++ b/Xext/sync.c
@@ -67,6 +67,7 @@ PERFORMANCE OF THIS SOFTWARE.
 #include "dixstruct.h"
 #include "resource.h"
 #include "opaque.h"
+#include "registry.h"
 #define _SYNC_SERVER
 #include <X11/extensions/sync.h>
 #include <X11/extensions/syncstr.h>
@@ -2411,6 +2412,45 @@ SyncExtensionInit(INITARGS)
     fprintf(stderr, "Sync Extension %d.%d\n",
 	    SYNC_MAJOR_VERSION, SYNC_MINOR_VERSION);
 #endif
+
+    RegisterRequestName(extEntry->base, X_SyncInitialize,
+			SYNC_NAME ":Initialize");
+    RegisterRequestName(extEntry->base, X_SyncListSystemCounters,
+			SYNC_NAME ":ListSystemCounters");
+    RegisterRequestName(extEntry->base, X_SyncCreateCounter,
+			SYNC_NAME ":CreateCounter");
+    RegisterRequestName(extEntry->base, X_SyncSetCounter,
+			SYNC_NAME ":SetCounter");
+    RegisterRequestName(extEntry->base, X_SyncChangeCounter,
+			SYNC_NAME ":ChangeCounter");
+    RegisterRequestName(extEntry->base, X_SyncQueryCounter,
+			SYNC_NAME ":QueryCounter");
+    RegisterRequestName(extEntry->base, X_SyncDestroyCounter,
+			SYNC_NAME ":DestroyCounter");
+    RegisterRequestName(extEntry->base, X_SyncAwait,
+			SYNC_NAME ":Await");
+    RegisterRequestName(extEntry->base, X_SyncCreateAlarm,
+			SYNC_NAME ":CreateAlarm");
+    RegisterRequestName(extEntry->base, X_SyncChangeAlarm,
+			SYNC_NAME ":ChangeAlarm");
+    RegisterRequestName(extEntry->base, X_SyncQueryAlarm,
+			SYNC_NAME ":QueryAlarm");
+    RegisterRequestName(extEntry->base, X_SyncDestroyAlarm,
+			SYNC_NAME ":DestroyAlarm");
+    RegisterRequestName(extEntry->base, X_SyncSetPriority,
+			SYNC_NAME ":SetPriority");
+    RegisterRequestName(extEntry->base, X_SyncGetPriority,
+			SYNC_NAME ":GetPriority");
+
+    RegisterEventName(SyncEventBase + XSyncCounterNotify,
+		      SYNC_NAME ":CounterNotify");
+    RegisterEventName(SyncEventBase + XSyncAlarmNotify,
+		      SYNC_NAME ":AlarmNotify");
+
+    RegisterErrorName(SyncErrorBase + XSyncBadCounter,
+		      SYNC_NAME ":BadCounter");
+    RegisterErrorName(SyncErrorBase + XSyncBadAlarm,
+		      SYNC_NAME ":BadAlarm");
 }