diff --git a/src/System.Private.CoreLib/shared/System/Memory.cs b/src/System.Private.CoreLib/shared/System/Memory.cs
index 20744046304b..d468a8ca2470 100644
--- a/src/System.Private.CoreLib/shared/System/Memory.cs
+++ b/src/System.Private.CoreLib/shared/System/Memory.cs
@@ -20,7 +20,7 @@ namespace System
     /// </summary>
     [DebuggerTypeProxy(typeof(MemoryDebugView<>))]
     [DebuggerDisplay("{ToString(),raw}")]
-    public readonly struct Memory<T>
+    public readonly struct Memory<T> : IEquatable<Memory<T>>
     {
         // NOTE: With the current implementation, Memory<T> and ReadOnlyMemory<T> must have the same layout,
         // as code uses Unsafe.As to cast between them.
diff --git a/src/System.Private.CoreLib/shared/System/ReadOnlyMemory.cs b/src/System.Private.CoreLib/shared/System/ReadOnlyMemory.cs
index bf90f0449d0b..be664e62325a 100644
--- a/src/System.Private.CoreLib/shared/System/ReadOnlyMemory.cs
+++ b/src/System.Private.CoreLib/shared/System/ReadOnlyMemory.cs
@@ -20,7 +20,7 @@ namespace System
     /// </summary>
     [DebuggerTypeProxy(typeof(MemoryDebugView<>))]
     [DebuggerDisplay("{ToString(),raw}")]
-    public readonly struct ReadOnlyMemory<T>
+    public readonly struct ReadOnlyMemory<T> : IEquatable<ReadOnlyMemory<T>>
     {
         // NOTE: With the current implementation, Memory<T> and ReadOnlyMemory<T> must have the same layout,
         // as code uses Unsafe.As to cast between them.