diff --git a/lib/protobuf/field/base_field.rb b/lib/protobuf/field/base_field.rb
index 3ae505a4..e50895ae 100644
--- a/lib/protobuf/field/base_field.rb
+++ b/lib/protobuf/field/base_field.rb
@@ -198,7 +198,6 @@ def define_array_setter
 
         message_class.class_eval do
           define_method(method_name) do |val|
-            @encode = nil
             if val.is_a?(Array)
               val = val.dup
               val.compact!
@@ -240,7 +239,6 @@ def define_setter
 
         message_class.class_eval do
           define_method(method_name) do |val|
-            @encode = nil
             if val.nil? || (val.respond_to?(:empty?) && val.empty?)
               @values.delete(field.name)
             elsif field.acceptable?(val)
diff --git a/lib/protobuf/field/bytes_field.rb b/lib/protobuf/field/bytes_field.rb
index d7f4aee4..6c017558 100644
--- a/lib/protobuf/field/bytes_field.rb
+++ b/lib/protobuf/field/bytes_field.rb
@@ -62,7 +62,6 @@ def define_setter
 
         message_class.class_eval do
           define_method(method_name) do |val|
-            @encode = nil
             case val
             when String, Symbol
               @values[field.name] = "#{val}"
diff --git a/lib/protobuf/field/enum_field.rb b/lib/protobuf/field/enum_field.rb
index 71632cde..ac26ea0e 100644
--- a/lib/protobuf/field/enum_field.rb
+++ b/lib/protobuf/field/enum_field.rb
@@ -42,7 +42,6 @@ def define_setter
         field = self
         message_class.class_eval do
           define_method("#{field.name}=") do |value|
-            @encode = nil
             orig_value = value
             if value.nil?
               @values.delete(field.name)
diff --git a/lib/protobuf/field/message_field.rb b/lib/protobuf/field/message_field.rb
index 8cb37bd7..6e62cdf4 100644
--- a/lib/protobuf/field/message_field.rb
+++ b/lib/protobuf/field/message_field.rb
@@ -40,7 +40,6 @@ def define_setter
         field = self
         message_class.class_eval do
           define_method("#{field.name}=") do |val|
-            @encode = nil
             case
             when val.nil?
               @values.delete(field.name)
diff --git a/lib/protobuf/message/serialization.rb b/lib/protobuf/message/serialization.rb
index 668b6cea..6526a95c 100644
--- a/lib/protobuf/message/serialization.rb
+++ b/lib/protobuf/message/serialization.rb
@@ -48,12 +48,10 @@ def decode_from(stream)
       # Encode this message
       #
       def encode
-        @encode ||= begin
-          stream = ::StringIO.new
-          stream.set_encoding(::Protobuf::Field::BytesField::BYTES_ENCODING)
-          encode_to(stream)
-          stream.string
-        end
+        stream = ::StringIO.new
+        stream.set_encoding(::Protobuf::Field::BytesField::BYTES_ENCODING)
+        encode_to(stream)
+        stream.string
       end
 
       # Encode this message to the given stream.
diff --git a/spec/lib/protobuf/message_spec.rb b/spec/lib/protobuf/message_spec.rb
index 1ac3bff0..f4b345c8 100644
--- a/spec/lib/protobuf/message_spec.rb
+++ b/spec/lib/protobuf/message_spec.rb
@@ -268,64 +268,6 @@
       end
     end
 
-    describe 'memoization' do
-      it "should memoize enum message" do
-        test_enum = Test::EnumTestMessage.new
-        test_enum.encode
-        expect(test_enum.instance_variable_get(:@encode)).to eq("")
-        test_enum.non_default_enum = 2
-        expect(test_enum.instance_variable_get(:@encode)).to be_nil
-      end
-
-      context "boolean fields" do
-        let(:values) { { :ext_is_searchable => true, :name => "STEPH CURRY" } }
-        let(:test_resource) { ::Test::Resource.new(values) }
-
-        it "should memoize after bool values change " do
-          test_resource.encode
-          expect(test_resource.instance_variable_get(:@encode)).to eq(test_resource.encode)
-          test_resource.ext_is_searchable = false
-          expect(test_resource.instance_variable_get(:@encode)).to be_nil
-        end
-      end
-
-      context "string" do
-        let(:values) { { :ext_is_searchable => true, :name => "STEPH CURRY" } }
-        let(:test_resource) { ::Test::Resource.new(values) }
-
-        it "should memoize after bool values change " do
-          test_resource.encode
-          expect(test_resource.instance_variable_get(:@encode)).to eq(test_resource.encode)
-          test_resource.name = "MVP"
-          expect(test_resource.instance_variable_get(:@encode)).to be_nil
-        end
-      end
-
-      context "string" do
-        let(:values) { { :ext_is_searchable => true, :name => "STEPH CURRY" } }
-        let(:test_resource) { ::Test::Resource.new(values) }
-
-        it "should memoize after string values change " do
-          test_resource.encode
-          expect(test_resource.instance_variable_get(:@encode)).to eq(test_resource.encode)
-          test_resource.name = "MVP"
-          expect(test_resource.instance_variable_get(:@encode)).to be_nil
-        end
-      end
-
-      context "Int64" do
-        let(:values) { { :name => "STEPH CURRY", :date_created => 1454712125 } }
-        let(:test_resource) { ::Test::Resource.new(values) }
-
-        it "should memoize after Int64 values change " do
-          test_resource.encode
-          expect(test_resource.instance_variable_get(:@encode)).to eq(test_resource.encode)
-          test_resource.date_created = 5554712127
-          expect(test_resource.instance_variable_get(:@encode)).to be_nil
-        end
-      end
-    end
-
     context "when there's no value for a required field" do
       let(:message) { ::Test::ResourceWithRequiredField.new }