diff --git a/Xext/syncsrv.h b/Xext/syncsrv.h
index 1afaf5fa3..f62b27946 100644
--- a/Xext/syncsrv.h
+++ b/Xext/syncsrv.h
@@ -116,17 +116,16 @@ typedef union {
     SyncAwait await;
 } SyncAwaitUnion;
 
-extern pointer SyncCreateSystemCounter(const char * /* name */ ,
-                                       CARD64 /* inital_value */ ,
-                                       CARD64 /* resolution */ ,
-                                       SyncCounterType
-                                       /* change characterization */ ,
+extern pointer SyncCreateSystemCounter(const char *name,
+                                       CARD64 initial_value,
+                                       CARD64 resolution,
+                                       SyncCounterType counterType,
                                        SyncSystemCounterQueryValue QueryValue,
                                        SyncSystemCounterBracketValues BracketValues
     );
 
-extern void SyncChangeCounter(SyncCounter * /* pCounter */ ,
-                              CARD64    /* new_value */
+extern void SyncChangeCounter(SyncCounter *pCounter,
+                              CARD64 new_value
     );
 
 extern void SyncDestroySystemCounter(pointer pCounter);