1 files changed, 1 insertions, 1 deletions
diff --git a/ARMeilleure/CodeGen/RegisterAllocators/CopyResolver.cs b/ARMeilleure/CodeGen/RegisterAllocators/CopyResolver.cs
index df4b6db1..587b1a02 100644
--- a/ARMeilleure/CodeGen/RegisterAllocators/CopyResolver.cs
+++ b/ARMeilleure/CodeGen/RegisterAllocators/CopyResolver.cs
@@ -11,7 +11,7 @@ namespace ARMeilleure.CodeGen.RegisterAllocators
     {
         private class ParallelCopy
         {
-            private struct Copy
+            private readonly struct Copy
             {
                 public Register Dest   { get; }
                 public Register Source { get; }