diff --git a/agent/acl_endpoint.go b/agent/acl_endpoint.go
index a61cdcd730..f88cc347fa 100644
--- a/agent/acl_endpoint.go
+++ b/agent/acl_endpoint.go
@@ -51,7 +51,7 @@ func (s *HTTPServer) ACLBootstrap(resp http.ResponseWriter, req *http.Request) (
 func (s *HTTPServer) ACLDestroy(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Mandate a PUT request
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
@@ -87,7 +87,7 @@ func (s *HTTPServer) ACLUpdate(resp http.ResponseWriter, req *http.Request) (int
 func (s *HTTPServer) aclSet(resp http.ResponseWriter, req *http.Request, update bool) (interface{}, error) {
 	// Mandate a PUT request
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
@@ -130,7 +130,7 @@ func (s *HTTPServer) aclSet(resp http.ResponseWriter, req *http.Request, update
 func (s *HTTPServer) ACLClone(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Mandate a PUT request
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
diff --git a/agent/agent_endpoint.go b/agent/agent_endpoint.go
index 37bf8a91ca..7d4a3c7572 100644
--- a/agent/agent_endpoint.go
+++ b/agent/agent_endpoint.go
@@ -384,7 +384,7 @@ type checkUpdate struct {
 // APIs.
 func (s *HTTPServer) AgentCheckUpdate(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
@@ -530,7 +530,7 @@ func (s *HTTPServer) AgentDeregisterService(resp http.ResponseWriter, req *http.
 func (s *HTTPServer) AgentServiceMaintenance(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Only PUT supported
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
@@ -586,7 +586,7 @@ func (s *HTTPServer) AgentServiceMaintenance(resp http.ResponseWriter, req *http
 func (s *HTTPServer) AgentNodeMaintenance(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Only PUT supported
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
@@ -629,7 +629,7 @@ func (s *HTTPServer) AgentNodeMaintenance(resp http.ResponseWriter, req *http.Re
 func (s *HTTPServer) AgentMonitor(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Only GET supported.
 	if req.Method != "GET" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
diff --git a/agent/event_endpoint.go b/agent/event_endpoint.go
index 15f0d7a053..1bb69a60b7 100644
--- a/agent/event_endpoint.go
+++ b/agent/event_endpoint.go
@@ -22,7 +22,7 @@ const (
 func (s *HTTPServer) EventFire(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Mandate a PUT request
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
diff --git a/agent/kvs_endpoint.go b/agent/kvs_endpoint.go
index 86f2f9766b..1056b40a9a 100644
--- a/agent/kvs_endpoint.go
+++ b/agent/kvs_endpoint.go
@@ -48,7 +48,7 @@ func (s *HTTPServer) KVSEndpoint(resp http.ResponseWriter, req *http.Request) (i
 	case "DELETE":
 		return s.KVSDelete(resp, req, &args)
 	default:
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 }
diff --git a/agent/prepared_query_endpoint.go b/agent/prepared_query_endpoint.go
index 1f4f6976c4..47d71f3a53 100644
--- a/agent/prepared_query_endpoint.go
+++ b/agent/prepared_query_endpoint.go
@@ -71,7 +71,7 @@ func (s *HTTPServer) PreparedQueryGeneral(resp http.ResponseWriter, req *http.Re
 		return s.preparedQueryList(resp, req)
 
 	default:
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 }
@@ -261,7 +261,7 @@ func (s *HTTPServer) PreparedQuerySpecific(resp http.ResponseWriter, req *http.R
 		return s.preparedQueryDelete(id, resp, req)
 
 	default:
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 }
diff --git a/agent/session_endpoint.go b/agent/session_endpoint.go
index ae453e06cc..21858da07a 100644
--- a/agent/session_endpoint.go
+++ b/agent/session_endpoint.go
@@ -29,7 +29,7 @@ type sessionCreateResponse struct {
 func (s *HTTPServer) SessionCreate(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Mandate a PUT request
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
@@ -109,7 +109,7 @@ func FixupLockDelay(raw interface{}) error {
 func (s *HTTPServer) SessionDestroy(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Mandate a PUT request
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}
 
@@ -138,7 +138,7 @@ func (s *HTTPServer) SessionDestroy(resp http.ResponseWriter, req *http.Request)
 func (s *HTTPServer) SessionRenew(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
 	// Mandate a PUT request
 	if req.Method != "PUT" {
-		resp.WriteHeader(405)
+		resp.WriteHeader(http.StatusMethodNotAllowed) // 405
 		return nil, nil
 	}