diff --git a/lib/rex/java/serialization.rb b/lib/rex/java/serialization.rb
index 9638ce4f45..fb049b85aa 100644
--- a/lib/rex/java/serialization.rb
+++ b/lib/rex/java/serialization.rb
@@ -27,6 +27,24 @@ module Rex
       SC_SERIALIZABLE = 0x02
       SC_EXTERNALIZABLE = 0x04
       SC_ENUM = 0x10
+
+      PRIMITIVE_TYPE_CODES = {
+        'B' => 'byte',
+        'C' => 'char',
+        'D' => 'double',
+        'F' => 'float',
+        'I' => 'int',
+        'J' => 'long',
+        'S' => 'short',
+        'Z' => 'boolean'
+      }
+
+      OBJECT_TYPE_CODES = {
+        '[' => 'array',
+        'L' => 'object'
+      }
+
+      TYPE_CODES = PRIMITIVE_TYPE_CODES.merge(OBJECT_TYPE_CODES)
     end
   end
 end
diff --git a/lib/rex/java/serialization/model/annotation.rb b/lib/rex/java/serialization/model/annotation.rb
index 0d1329d4f2..29e526a704 100644
--- a/lib/rex/java/serialization/model/annotation.rb
+++ b/lib/rex/java/serialization/model/annotation.rb
@@ -6,6 +6,8 @@ module Rex
         # annotations (classAnnotation) and object annotations (objectAnnotation).
         class Annotation < Element
 
+          include Rex::Java::Serialization
+
           # @!attribute contents
           #   @return [Array] The annotation contents
           attr_accessor :contents
@@ -28,13 +30,13 @@ module Rex
               opcode = opcode.unpack('C')[0]
 
               case opcode
-              when Rex::Java::Serialization::TC_BLOCKDATA
+              when TC_BLOCKDATA
                 block = BlockData.decode(io)
                 self.contents << block
-              when Rex::Java::Serialization::TC_BLOCKDATALONG
+              when TC_BLOCKDATALONG
                 block = BlockDataLong.decode(io)
                 self.contents << block
-              when Rex::Java::Serialization::TC_ENDBLOCKDATA
+              when TC_ENDBLOCKDATA
                 return self
               else
                 #TODO: unsupported
@@ -55,9 +57,9 @@ module Rex
             contents.each do |content|
               case content
               when Rex::Java::Serialization::Model::BlockData
-                encoded << [Rex::Java::Serialization::TC_BLOCKDATA].pack('C')
+                encoded << [TC_BLOCKDATA].pack('C')
               when Rex::Java::Serialization::Model::BlockDataLong
-                encoded << [Rex::Java::Serialization::TC_BLOCKDATALONG].pack('C')
+                encoded << [TC_BLOCKDATALONG].pack('C')
               else
                 raise ::RuntimeError, 'Unsupported content'
               end
@@ -65,7 +67,7 @@ module Rex
               encoded << encoded_content
             end
 
-            encoded << [Rex::Java::Serialization::TC_ENDBLOCKDATA].pack('C')
+            encoded << [TC_ENDBLOCKDATA].pack('C')
 
             encoded
           end
diff --git a/lib/rex/java/serialization/model/class_description.rb b/lib/rex/java/serialization/model/class_description.rb
index e4c63f844a..7b13b417cb 100644
--- a/lib/rex/java/serialization/model/class_description.rb
+++ b/lib/rex/java/serialization/model/class_description.rb
@@ -5,6 +5,8 @@ module Rex
         # This class provides a class description representation
         class ClassDescription < Element
 
+          include Rex::Java::Serialization
+
           # @!attribute class_name
           #   @return [Java::Serialization::Model::Utf] The name of the class
           attr_accessor :class_name
@@ -73,10 +75,10 @@ module Rex
 
             case super_class
             when Rex::Java::Serialization::Model::ClassDescription
-              encoded << [Rex::Java::Serialization::TC_CLASSDESC].pack('C')
+              encoded << [TC_CLASSDESC].pack('C')
               encoded << super_class.encode
             when nil
-              encoded << [Rex::Java::Serialization::TC_NULL].pack('C')
+              encoded << [TC_NULL].pack('C')
             else
               #TODO: support other superclass types
               raise RuntimeError, 'Failed to serialize ClassDescription'
@@ -142,9 +144,9 @@ module Rex
             class_desc = nil
 
             case super_opcode
-            when Rex::Java::Serialization::TC_NULL
+            when TC_NULL
               class_desc = nil
-            when Rex::Java::Serialization::TC_CLASSDESC
+            when TC_CLASSDESC
               class_desc = ClassDescription.decode(io)
             else
               #TODO: Support TC_PROXYCLASSDESC
diff --git a/lib/rex/java/serialization/model/field.rb b/lib/rex/java/serialization/model/field.rb
index 817b1d5848..2ca0e5afa0 100644
--- a/lib/rex/java/serialization/model/field.rb
+++ b/lib/rex/java/serialization/model/field.rb
@@ -6,23 +6,7 @@ module Rex
         # both primitive descriptions (primitiveDesc) and object descriptions (objectDesc).
         class Field < Element
 
-          PRIMITIVE_TYPE_CODES = {
-            'B' => 'byte',
-            'C' => 'char',
-            'D' => 'double',
-            'F' => 'float',
-            'I' => 'integer',
-            'J' => 'long',
-            'S' => 'short',
-            'Z' => 'boolean',
-          }
-
-          OBJECT_TYPE_CODES = {
-            '[' => 'array',
-            'L' => 'object'
-          }
-
-          TYPE_CODES = PRIMITIVE_TYPE_CODES.merge(OBJECT_TYPE_CODES)
+          include Rex::Java::Serialization
 
           # @!attribute type
           #   @return [String] The type of the field.
@@ -133,7 +117,7 @@ module Rex
           #
           # @return [String]
           def encode_field_type
-            encoded = [Java::Serialization::TC_STRING].pack('C')
+            encoded = [TC_STRING].pack('C')
             encoded << field_type.encode
 
             encoded
@@ -146,7 +130,7 @@ module Rex
           # @raise [RuntimeError] if unserialization isn't possible
           def decode_field_type(io)
             opcode = io.read(1)
-            unless opcode && opcode == [Java::Serialization::TC_STRING].pack('C')
+            unless opcode && opcode == [TC_STRING].pack('C')
               raise ::RuntimeError, 'Failed to unserialize Field'
             end
             type = Utf.decode(io)
diff --git a/spec/lib/rex/java/serialization/model/field_spec.rb b/spec/lib/rex/java/serialization/model/field_spec.rb
index c4dd3fb568..a20fb6dded 100644
--- a/spec/lib/rex/java/serialization/model/field_spec.rb
+++ b/spec/lib/rex/java/serialization/model/field_spec.rb
@@ -36,7 +36,7 @@ describe Rex::Java::Serialization::Model::Field do
 
     context "when primitive field" do
       it do
-        field.type = 'integer'
+        field.type = 'int'
         field.name = Rex::Java::Serialization::Model::Utf.new('number')
         expect(field.encode).to eq(sample_primitive)
       end
@@ -60,7 +60,7 @@ describe Rex::Java::Serialization::Model::Field do
 
       it "decodes field type" do
         field.decode(sample_primitive_io)
-        expect(field.type).to eq('integer')
+        expect(field.type).to eq('int')
       end
 
       it "decodes field name as Utf" do