diff --git a/pkg/daemon/ceph/client/status.go b/pkg/daemon/ceph/client/status.go
index 1c462a236..cd0c33cfd 100644
--- a/pkg/daemon/ceph/client/status.go
+++ b/pkg/daemon/ceph/client/status.go
@@ -70,7 +70,7 @@ type Summary struct {
 
 type MonMap struct {
 	Epoch        int           `json:"epoch"`
-	NumMons      int           `josn:"num_mons"`
+	NumMons      int           `json:"num_mons"`
 	FSID         string        `json:"fsid"`
 	CreatedTime  string        `json:"created"`
 	ModifiedTime string        `json:"modified"`