diff --git a/src/Middleware/HealthChecks/src/Builder/HealthCheckApplicationBuilderExtensions.cs b/src/Middleware/HealthChecks/src/Builder/HealthCheckApplicationBuilderExtensions.cs
index 6f54f51765..7b9fabebdd 100644
--- a/src/Middleware/HealthChecks/src/Builder/HealthCheckApplicationBuilderExtensions.cs
+++ b/src/Middleware/HealthChecks/src/Builder/HealthCheckApplicationBuilderExtensions.cs
@@ -200,6 +200,11 @@ namespace Microsoft.AspNetCore.Builder
             }
 
             if (path == null)
+            {
+                throw new ArgumentNullException(nameof(path));
+            }
+
+            if (port == null)
             {
                 throw new ArgumentNullException(nameof(port));
             }