diff --git a/docs/basics.md b/docs/basics.md
index f5243c7ca..6203a427e 100644
--- a/docs/basics.md
+++ b/docs/basics.md
@@ -454,12 +454,12 @@ The deprecated way:
 
 #### Health Check
 
-A health check can be configured in order to remove a backend from LB rotation as long as it keeps returning HTTP status codes other than `2xx` to HTTP GET requests periodically carried out by Traefik.  
+A health check can be configured in order to remove a backend from LB rotation as long as it keeps returning HTTP status codes other than `2xx` or `3xx` to HTTP GET requests periodically carried out by Traefik.  
 The check is defined by a path appended to the backend URL and an interval (given in a format understood by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration)) specifying how often the health check should be executed (the default being 30 seconds).
 Each backend must respond to the health check within 5 seconds.  
 By default, the port of the backend server is used, however, this may be overridden.
 
-A recovering backend returning `2xx` responses again is being returned to the LB rotation pool.
+A recovering backend returning `2xx` or `3xx` responses again is being returned to the LB rotation pool.
 
 For example:
 ```toml
diff --git a/healthcheck/healthcheck.go b/healthcheck/healthcheck.go
index ab9a2108f..f87e4a2ca 100644
--- a/healthcheck/healthcheck.go
+++ b/healthcheck/healthcheck.go
@@ -203,8 +203,8 @@ func checkHealth(serverURL *url.URL, backend *BackendHealthCheck) error {
 
 	defer resp.Body.Close()
 
-	if resp.StatusCode < http.StatusOK || resp.StatusCode >= http.StatusMultipleChoices {
-		return fmt.Errorf("received non-2xx status code: %v", resp.StatusCode)
+	if resp.StatusCode < http.StatusOK || resp.StatusCode >= http.StatusBadRequest {
+		return fmt.Errorf("received error status code: %v", resp.StatusCode)
 	}
 
 	return nil
diff --git a/healthcheck/healthcheck_test.go b/healthcheck/healthcheck_test.go
index 6ede3a847..004ba0c7b 100644
--- a/healthcheck/healthcheck_test.go
+++ b/healthcheck/healthcheck_test.go
@@ -47,6 +47,14 @@ func TestSetBackendsConfiguration(t *testing.T) {
 			expectedNumUpsertedServers: 0,
 			expectedGaugeValue:         1,
 		},
+		{
+			desc:                       "healthy server staying healthy (StatusPermanentRedirect)",
+			startHealthy:               true,
+			healthSequence:             []int{http.StatusPermanentRedirect},
+			expectedNumRemovedServers:  0,
+			expectedNumUpsertedServers: 0,
+			expectedGaugeValue:         1,
+		},
 		{
 			desc:                       "healthy server becoming sick",
 			startHealthy:               true,