diff --git a/cpu/simple/cpu.cc b/cpu/simple/cpu.cc
index d352d8c03..a7f4fa499 100644
--- a/cpu/simple/cpu.cc
+++ b/cpu/simple/cpu.cc
@@ -382,6 +382,7 @@ SimpleCPU::copy(Addr dest)
             memReq->dest = dest_addr;
             memReq->size = 64;
             memReq->time = curTick;
+            memReq->flags &= ~INST_READ;
             dcacheInterface->access(memReq);
         }
     }
@@ -412,6 +413,7 @@ SimpleCPU::read(Addr addr, T &data, unsigned flags)
         memReq->cmd = Read;
         memReq->completionEvent = NULL;
         memReq->time = curTick;
+        memReq->flags &= ~INST_READ;
         MemAccessResult result = dcacheInterface->access(memReq);
 
         // Ugly hack to get an event scheduled *only* if the access is
@@ -500,6 +502,7 @@ SimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res)
         memcpy(memReq->data,(uint8_t *)&data,memReq->size);
         memReq->completionEvent = NULL;
         memReq->time = curTick;
+        memReq->flags &= ~INST_READ;
         MemAccessResult result = dcacheInterface->access(memReq);
 
         // Ugly hack to get an event scheduled *only* if the access is
@@ -714,6 +717,7 @@ SimpleCPU::tick()
             memReq->completionEvent = NULL;
 
             memReq->time = curTick;
+            memReq->flags |= INST_READ;
             MemAccessResult result = icacheInterface->access(memReq);
 
             // Ugly hack to get an event scheduled *only* if the access is