diff --git a/pkg/operator/ceph/cluster/watcher.go b/pkg/operator/ceph/cluster/watcher.go
index 722642412..f04e5353d 100644
--- a/pkg/operator/ceph/cluster/watcher.go
+++ b/pkg/operator/ceph/cluster/watcher.go
@@ -350,8 +350,9 @@ func rbdStatusUnMarshal(output []byte) ([]string, error) {
 }
 
 func concatenateWatcherIp(address string) string {
-	// split with separation '/' to remove nounce and concatenating `/32` to define a network with only one IP address
-	watcherIP := strings.Split(address, "/")[0] + "/32"
+	// address is in format `10.63.0.5:0/1254753579`
+	// split with separation ':0/' to remove nounce and concatenating `/32` to define a network with only one IP address
+	watcherIP := strings.Split(address, ":0/")[0] + "/32"
 	return watcherIP
 }
 
diff --git a/pkg/operator/ceph/cluster/watcher_test.go b/pkg/operator/ceph/cluster/watcher_test.go
index 2339559c7..2a28d755f 100644
--- a/pkg/operator/ceph/cluster/watcher_test.go
+++ b/pkg/operator/ceph/cluster/watcher_test.go
@@ -348,12 +348,12 @@ func TestRBDStatusUnMarshal(t *testing.T) {
 
 	listIP, err := rbdStatusUnMarshal([]byte(output))
 	assert.NoError(t, err)
-	assert.Equal(t, listIP[0], "192.168.39.137:0/32")
+	assert.Equal(t, listIP[0], "192.168.39.137/32")
 }
 
 func TestConcatenateWatcherIp(t *testing.T) {
 	WatcherIP := concatenateWatcherIp("192.168.39.137:0/3762982934")
-	assert.Equal(t, WatcherIP, "192.168.39.137:0/32")
+	assert.Equal(t, WatcherIP, "192.168.39.137/32")
 }
 
 func TestOnDeviceCMUpdate(t *testing.T) {