diff --git a/pkg/kubectl/rollback.go b/pkg/kubectl/rollback.go
index 2d984d0d66..027abadc4f 100644
--- a/pkg/kubectl/rollback.go
+++ b/pkg/kubectl/rollback.go
@@ -418,7 +418,9 @@ func getStatefulSetPatch(set *appsv1.StatefulSet) ([]byte, error) {
 		return nil, err
 	}
 	var raw map[string]interface{}
-	json.Unmarshal([]byte(str), &raw)
+	if err := json.Unmarshal([]byte(str), &raw); err != nil {
+		return nil, err
+	}
 	objCopy := make(map[string]interface{})
 	specCopy := make(map[string]interface{})
 	spec := raw["spec"].(map[string]interface{})