diff --git a/src/mscorlib/shared/System/Runtime/InteropServices/MemoryMarshal.cs b/src/mscorlib/shared/System/Runtime/InteropServices/MemoryMarshal.cs
index b023022df8e2..2651df53a05f 100644
--- a/src/mscorlib/shared/System/Runtime/InteropServices/MemoryMarshal.cs
+++ b/src/mscorlib/shared/System/Runtime/InteropServices/MemoryMarshal.cs
@@ -28,7 +28,7 @@ public static Memory<T> AsMemory<T>(ReadOnlyMemory<T> readOnlyMemory) =>
 
         public static ref T GetReference<T>(Span<T> span) => ref span._pointer.Value;
 
-        public static ref readonly T GetReference<T>(ReadOnlySpan<T> span) => ref span._pointer.Value;
+        public static ref T GetReference<T>(ReadOnlySpan<T> span) => ref span._pointer.Value;
 
         public static bool TryGetArray<T>(ReadOnlyMemory<T> readOnlyMemory, out ArraySegment<T> arraySegment)
         {