diff --git a/groundtest/src/main/scala/cachetest.scala b/groundtest/src/main/scala/cachetest.scala
index 84eea29d..4b65a4de 100644
--- a/groundtest/src/main/scala/cachetest.scala
+++ b/groundtest/src/main/scala/cachetest.scala
@@ -23,7 +23,7 @@ class CacheFillTest(implicit p: Parameters) extends GroundTest()(p)
   io.mem.acquire.bits := Mux(state === s_prefetch,
     GetPrefetch(xact_id, UInt(memStartBlock) + req_block),
     GetBlock(xact_id, UInt(memStartBlock) + req_block))
-  io.mem.grant.ready := active
+  io.mem.grant.ready := inflight
 
   when (io.mem.acquire.fire()) {
     inflight := Bool(true)