diff --git a/user/domain/domain.go b/user/domain/domain.go
index 8a42fd5..4cbd14d 100644
--- a/user/domain/domain.go
+++ b/user/domain/domain.go
@@ -501,7 +501,7 @@ func (domain *Domain) CacheReadToken(ctx context.Context, token string) (string,
 
 	expires, err := cache.Context(ctx).Get(token, email)
 
-	if err == cache.ErrNotFound {
+	if err != nil && err == cache.ErrNotFound {
 		return "", errors.New("token not found")
 	} else if time.Until(expires).Seconds() < 0 {
 		return "", errors.New("token expired")
diff --git a/user/handler/handler.go b/user/handler/handler.go
index cac0129..14a1f34 100644
--- a/user/handler/handler.go
+++ b/user/handler/handler.go
@@ -437,15 +437,15 @@ func (s *User) VerifyToken(ctx context.Context, req *pb.VerifyTokenRequest, rsp
 
 	// check if token is valid
 	email, err := s.domain.CacheReadToken(ctx, token)
-	if err.Error() == "token not found" {
+	if err != nil && err.Error() == "token not found" {
 		rsp.IsValid = false
 		rsp.Message = err.Error()
 		return nil
-	} else if err.Error() == "token expired" {
+	} else if err != nil && err.Error() == "token expired" {
 		rsp.IsValid = false
 		rsp.Message = err.Error()
 		return nil
-	} else if err.Error() == "token empty" {
+	} else if err != nil && err.Error() == "token empty" {
 		rsp.IsValid = false
 		rsp.Message = err.Error()
 		return nil