diff --git a/Documentation/API.md b/Documentation/API.md
index bf76665d6..03b42b183 100644
--- a/Documentation/API.md
+++ b/Documentation/API.md
@@ -141,26 +141,6 @@ then the word `Message` is appended to the name.
 For example, a `message Int` in the proto file will cause the
 generator to emit a `struct IntMessage` to the generated Swift file.
 
-### Overridable Message methods
-
-You can redefine the following in manually-constructed extensions if you
-want to override the default generated behavior for any reason:
-
-```swift
-  // By default, this just calls `serializedText()`
-  public var debugDescription: String
-
-  // By default, this computes a simple hash over all of the
-  // defined fields and submessages.
-  public var hashValue: Int
-
-  // The == operator is implemented in terms of this method
-  // so that you can easily override the implementation.
-  // You may override this method, but you should never call it directly.
-  // The default generated implementation compares every field for equality.
-  public func isEqualTo(message: Example) -> Bool
-```
-
 ## Enum API
 
 Proto enums are translated to Swift enums in a fairly straightforward manner.
diff --git a/Documentation/INTERNALS.md b/Documentation/INTERNALS.md
index dbf68e127..a2c9289ad 100644
--- a/Documentation/INTERNALS.md
+++ b/Documentation/INTERNALS.md
@@ -375,9 +375,9 @@ use an additional type object at this point.
 
 Many other facilities - not just serialization - can be built on
 top of this same machinery.
-For example, the default `hashValue` implementation uses the same
-traversal machinery to iterate over all of the set fields and values
-in order to compute the hash.
+For example, the `hashValue` implementation uses the same traversal
+machinery to iterate over all of the set fields and values in order
+to compute the hash.
 
 You can look at the runtime library to see more details about the
 `Visitor` protocol and the various implementations in each encoder.
@@ -448,8 +448,6 @@ collected unknown field data onto the resulting message object.
 
 TODO: initializers
 
-TODO: isEqualTo
-
 TODO: _protobuf_generated methods
 
 # Enums
diff --git a/Sources/SwiftProtobuf/Message.swift b/Sources/SwiftProtobuf/Message.swift
index 74d488cfd..70c2b9a20 100644
--- a/Sources/SwiftProtobuf/Message.swift
+++ b/Sources/SwiftProtobuf/Message.swift
@@ -30,9 +30,7 @@
 ///     }
 ///
 /// The actual functionality is implemented either in the generated code or in
-/// default implementations of the below methods and properties. Some of them,
-/// including `hashValue` and `debugDescription`, are designed to let you
-/// override the functionality in custom extensions to the generated code.
+/// default implementations of the below methods and properties.
 public protocol Message: CustomDebugStringConvertible {
   /// Creates a new message with all of its fields initialized to their default
   /// values.
@@ -108,11 +106,6 @@ public protocol Message: CustomDebugStringConvertible {
   /// with the `Hashable` protocol.
   var hashValue: Int { get }
 
-  /// A textual representation of this message's contents suitable for
-  /// debugging, for conformance with the `CustomDebugStringConvertible`
-  /// protocol.
-  var debugDescription: String { get }
-
   /// Helper to compare `Message`s when not having a specific type to use
   /// normal `Equatable`. `Equatable` is provided with specific generated
   /// types.
@@ -129,13 +122,7 @@ public extension Message {
     return true
   }
 
-  /// A hash based on the message's full contents. Can be overridden
-  /// to improve performance and/or remove some values from being used for the
-  /// hash.
-  ///
-  /// If you override this, make sure you maintain the property that values
-  /// which are `==` to each other have identical `hashValues`, providing a
-  /// custom implementation of `==` if necessary.
+  /// A hash based on the message's full contents.
   var hashValue: Int {
     var visitor = HashVisitor()
     try? traverse(visitor: &visitor)
@@ -143,8 +130,7 @@ public extension Message {
   }
 
   /// A description generated by recursively visiting all fields in the message,
-  /// including messages. May be overridden to improve readability and/or
-  /// performance.
+  /// including messages.
   var debugDescription: String {
     // TODO Ideally there would be something like serializeText() that can
     // take a prefix so we could do something like: