diff --git a/src/gpu-compute/fetch_unit.cc b/src/gpu-compute/fetch_unit.cc
index fb04cd27e0..447ff12faa 100644
--- a/src/gpu-compute/fetch_unit.cc
+++ b/src/gpu-compute/fetch_unit.cc
@@ -234,6 +234,16 @@ FetchUnit::fetch(PacketPtr pkt, Wavefront *wavefront)
     pkt = new Packet(oldPkt->req, oldPkt->cmd);
     delete oldPkt;
 
+    /**
+     * if we have not reserved an entry in the fetch buffer,
+     * stop fetching. this can happen due to a branch instruction
+     * flushing the fetch buffer while an ITLB or I-cache request is still
+     * pending, in the same cycle another instruction is trying to fetch.
+     */
+    if (!fetchBuf.at(wavefront->wfSlotId).isReserved(pkt->req->getVaddr())) {
+        return;
+    }
+
     /**
      * we should have reserved an entry in the fetch buffer
      * for this cache line. here we get the pointer to the
diff --git a/src/gpu-compute/fetch_unit.hh b/src/gpu-compute/fetch_unit.hh
index 2cfe3f0fee..798c264655 100644
--- a/src/gpu-compute/fetch_unit.hh
+++ b/src/gpu-compute/fetch_unit.hh
@@ -120,6 +120,18 @@ class FetchUnit
             return reserved_pc->second;
         }
 
+        /**
+         * returns true if there is an entry reserved for this address,
+         * and false otherwise
+         */
+        bool
+        isReserved(Addr vaddr) const
+        {
+            auto reserved_pc = reservedPCs.find(vaddr);
+            bool is_reserved = (reserved_pc != reservedPCs.end());
+            return is_reserved;
+        }
+
         void fetchDone(Addr vaddr);
 
         /**