diff --git a/runtime.h b/runtime.h
index 9099781e..5ea8e783 100644
--- a/runtime.h
+++ b/runtime.h
@@ -429,7 +429,6 @@ static object find_or_add_symbol(const char *name){
 /* Write Barrier
    This is necessary when a mutation (EG: set-car!) occurs, because otherwise
    if the new value is on the stack, it will never be transported to the heap.
-*/
 list write_barrier = nil;
 
 static void add_to_write_barrier(object obj);
@@ -460,7 +459,7 @@ static void clear_write_barrier() {
   }
   write_barrier = nil;
 }
-/* END write barrier */
+* END write barrier */
 
 /* Global variables. */
 
@@ -796,13 +795,11 @@ static object Cyc_eq(object x, object y) {
 }
 
 static object Cyc_set_car(object l, object val) {
-    //add_to_write_barrier(val);
     ((list)l)->cons_car = val;
     return l;
 }
 
 static object Cyc_set_cdr(object l, object val) {
-    //add_to_write_barrier(val);
     ((list)l)->cons_cdr = val;
     return l;
 }
@@ -1753,8 +1750,8 @@ static void GC_loop(int major, closure cont, object *ans, int num_ans)
 #endif
 
  /* Transport global variables. */
- transp_write_barrier();
- clear_write_barrier(); /* Reset for next time */
+// transp_write_barrier();
+// clear_write_barrier(); /* Reset for next time */
  transp(Cyc_global_variables); /* Internal global used by the runtime */
  GC_GLOBALS
  while (scanp<allocp)       /* Scan the newspace. */