diff --git a/src/Common/src/CoreLib/System/Runtime/CompilerServices/MethodImplOptions.cs b/src/Common/src/CoreLib/System/Runtime/CompilerServices/MethodImplOptions.cs
index 2b5affc699ab..b50ae094ce04 100644
--- a/src/Common/src/CoreLib/System/Runtime/CompilerServices/MethodImplOptions.cs
+++ b/src/Common/src/CoreLib/System/Runtime/CompilerServices/MethodImplOptions.cs
@@ -16,6 +16,7 @@ public enum MethodImplOptions
         NoOptimization = 0x0040,
         PreserveSig = 0x0080,
         AggressiveInlining = 0x0100,
+        AggressiveOptimization = 0x0200,
         InternalCall = 0x1000
     }
 }
\ No newline at end of file