diff --git a/go/topology/topology.go b/go/topology/topology.go
index c90e8de0b..876b7c418 100644
--- a/go/topology/topology.go
+++ b/go/topology/topology.go
@@ -109,7 +109,7 @@ func (t *Topology) NextVolumeId() storage.VolumeId {
 	return next
 }
 
-func (t *Topology) HasWriableVolume(option *VolumeGrowOption) bool {
+func (t *Topology) HasWriteableVolume(option *VolumeGrowOption) bool {
 	vl := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl)
 	return vl.GetActiveVolumeCount(option) > 0
 }
diff --git a/go/weed/weed_server/master_server_handlers.go b/go/weed/weed_server/master_server_handlers.go
index 93e9e7d9a..7d54521d9 100644
--- a/go/weed/weed_server/master_server_handlers.go
+++ b/go/weed/weed_server/master_server_handlers.go
@@ -78,7 +78,7 @@ func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	if !ms.Topo.HasWriableVolume(option) {
+	if !ms.Topo.HasWriteableVolume(option) {
 		if ms.Topo.FreeSpace() <= 0 {
 			w.WriteHeader(http.StatusNotFound)
 			writeJsonQuiet(w, r, operation.AssignResult{Error: "No free volumes left!"})
@@ -86,7 +86,7 @@ func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request)
 		} else {
 			ms.vgLock.Lock()
 			defer ms.vgLock.Unlock()
-			if !ms.Topo.HasWriableVolume(option) {
+			if !ms.Topo.HasWriteableVolume(option) {
 				if _, err = ms.vg.AutomaticGrowByType(option, ms.Topo); err != nil {
 					writeJsonQuiet(w, r, operation.AssignResult{Error: "Cannot grow volume group! " + err.Error()})
 					return