diff --git a/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushbyte.rb b/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushbyte.rb
index 3de9047..fc10a8b 100644
--- a/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushbyte.rb
+++ b/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushbyte.rb
@@ -3,7 +3,7 @@ class AS3PushByte < PushLiteralOpcode
     instruction 0x24
 
     body do
-      uint8 :value
+      int8 :value
     end
 
     type :integer
diff --git a/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushshort.rb b/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushshort.rb
index c47b29e..b6b2503 100644
--- a/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushshort.rb
+++ b/lib/furnace-avm2/abc/opcodes/push_literal/as3_pushshort.rb
@@ -3,7 +3,7 @@ class AS3PushShort < PushLiteralOpcode
     instruction 0x25
 
     body do
-      vuint30 :value
+      vint32 :value
     end
 
     type :integer
diff --git a/lib/furnace-avm2/binary/record.rb b/lib/furnace-avm2/binary/record.rb
index ca0f634..9f96b2c 100644
--- a/lib/furnace-avm2/binary/record.rb
+++ b/lib/furnace-avm2/binary/record.rb
@@ -186,6 +186,20 @@ def length_uint8(value, options)
       1
     end
 
+    # int8
+
+    def read_int8(io, options)
+      io.read(1).unpack("c").at(0)
+    end
+
+    def write_int8(io, value, options)
+      io.write([value].pack("c"))
+    end
+
+    def length_int8(value, options)
+      1
+    end
+
     # uint16
 
     def read_uint16(io, options)
diff --git a/test/basic.as b/test/basic.as
index 74c06be..aab23a4 100644
--- a/test/basic.as
+++ b/test/basic.as
@@ -1,7 +1,7 @@
 package test {
   class Literal {
     function test() {
-      call(1, 1, 200, 200);
+      call(1, 1, 200, 200, -1, -50, 32767, 32768, -32760, -500000);
     }
   }