diff --git a/src/Perspex.Base/Contract.cs b/src/Perspex.Base/Contract.cs
index fb568841ca..95e2976474 100644
--- a/src/Perspex.Base/Contract.cs
+++ b/src/Perspex.Base/Contract.cs
@@ -1,6 +1,8 @@
 // Copyright (c) The Perspex Project. All rights reserved.
 // Licensed under the MIT license. See licence.md file in the project root for full license information.
 
+using System.Runtime.CompilerServices;
+
 namespace Perspex
 {
     using System;
@@ -22,14 +24,13 @@ namespace Perspex
         /// The exception to throw if <paramref name="condition"/> is false.
         /// </typeparam>
         /// <param name="condition">The precondition.</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void Requires<TException>(bool condition) where TException : Exception, new()
         {
-#if DEBUG
             if (!condition)
             {
                 throw new TException();
             }
-#endif
         }
     }
 }