diff --git a/mps/code/mpm.h b/mps/code/mpm.h
index de9a955a2d2..4746835a75a 100644
--- a/mps/code/mpm.h
+++ b/mps/code/mpm.h
@@ -226,9 +226,7 @@ extern Res PoolWhiten(Pool pool, Trace trace, Seg seg);
 extern void PoolGrey(Pool pool, Trace trace, Seg seg);
 extern void PoolBlacken(Pool pool, TraceSet traceSet, Seg seg);
 extern Res PoolScan(Bool *totalReturn, ScanState ss, Pool pool, Seg seg);
-extern Res (PoolFix)(Pool pool, ScanState ss, Seg seg, Addr *refIO);
-#define PoolFix(pool, ss, seg, refIO) \
-  ((*(pool)->fix)(pool, ss, seg, refIO))
+extern Res PoolFix(Pool pool, ScanState ss, Seg seg, Addr *refIO);
 extern Res PoolFixEmergency(Pool pool, ScanState ss, Seg seg, Addr *refIO);
 extern void PoolReclaim(Pool pool, Trace trace, Seg seg);
 extern void PoolTraceEnd(Pool pool, Trace trace);
diff --git a/mps/code/pool.c b/mps/code/pool.c
index 60fd38dda91..40b6abc7b58 100644
--- a/mps/code/pool.c
+++ b/mps/code/pool.c
@@ -400,10 +400,10 @@ Res PoolScan(Bool *totalReturn, ScanState ss, Pool pool, Seg seg)
 
 /* PoolFix* -- fix a reference to an object in this pool
  *
- * See <code/mpm.h> for macro version; see <design/pool/#req.fix>.
+ * See <design/pool/#req.fix>.
  */
 
-Res (PoolFix)(Pool pool, ScanState ss, Seg seg, Addr *refIO)
+Res PoolFix(Pool pool, ScanState ss, Seg seg, Addr *refIO)
 {
   AVERT_CRITICAL(Pool, pool);
   AVERT_CRITICAL(ScanState, ss);
@@ -414,7 +414,7 @@ Res (PoolFix)(Pool pool, ScanState ss, Seg seg, Addr *refIO)
   /* Should only be fixing references to white segments. */
   AVER_CRITICAL(TraceSetInter(SegWhite(seg), ss->traces) != TraceSetEMPTY);
 
-  return PoolFix(pool, ss, seg, refIO);
+  return pool->fix(pool, ss, seg, refIO);
 }
 
 Res PoolFixEmergency(Pool pool, ScanState ss, Seg seg, Addr *refIO)