diff --git a/src/aeser_api_encoder.erl b/src/aeser_api_encoder.erl
index e66bdec..7d2ed30 100644
--- a/src/aeser_api_encoder.erl
+++ b/src/aeser_api_encoder.erl
@@ -38,7 +38,8 @@
                     | poi
                     | state_trees
                     | call_state_tree
-                    | bytearray.
+                    | bytearray
+                    | fate_code.
 
 -type extended_type() :: known_type() | block_hash | {id_hash, [known_type()]}.
 
@@ -199,7 +200,8 @@ type2enc(state)                -> ?BASE64;
 type2enc(poi)                  -> ?BASE64;
 type2enc(state_trees)          -> ?BASE64;
 type2enc(call_state_tree)      -> ?BASE64;
-type2enc(bytearray)            -> ?BASE64.
+type2enc(bytearray)            -> ?BASE64;
+type2enc(fate_code)            -> ?BASE64.
 
 
 type2pfx(key_block_hash)       -> <<"kh">>;
@@ -227,7 +229,8 @@ type2pfx(state)                -> <<"st">>;
 type2pfx(poi)                  -> <<"pi">>;
 type2pfx(state_trees)          -> <<"ss">>;
 type2pfx(call_state_tree)      -> <<"cs">>;
-type2pfx(bytearray)            -> <<"ba">>.
+type2pfx(bytearray)            -> <<"ba">>;
+type2pfx(fate_code)            -> <<"fc">>.
 
 pfx2type(<<"kh">>) -> key_block_hash;
 pfx2type(<<"mh">>) -> micro_block_hash;
@@ -254,7 +257,8 @@ pfx2type(<<"st">>) -> state;
 pfx2type(<<"pi">>) -> poi;
 pfx2type(<<"ss">>) -> state_trees;
 pfx2type(<<"cs">>) -> call_state_tree;
-pfx2type(<<"ba">>) -> bytearray.
+pfx2type(<<"ba">>) -> bytearray;
+pfx2type(<<"fc">>) -> fate_code.
 
 -spec byte_size_for_type(known_type()) -> non_neg_integer() | not_applicable.
 
@@ -283,7 +287,8 @@ byte_size_for_type(state)                -> 32;
 byte_size_for_type(poi)                  -> not_applicable;
 byte_size_for_type(state_trees)          -> not_applicable;
 byte_size_for_type(call_state_tree)      -> not_applicable;
-byte_size_for_type(bytearray)            -> not_applicable.
+byte_size_for_type(bytearray)            -> not_applicable;
+byte_size_for_type(fate_code)            -> not_applicable.
 
 
 %% TODO: Fix the base58 module so that it consistently uses binaries instead
diff --git a/test/aeser_api_encoder_tests.erl b/test/aeser_api_encoder_tests.erl
index 732b32d..bd58eb2 100644
--- a/test/aeser_api_encoder_tests.erl
+++ b/test/aeser_api_encoder_tests.erl
@@ -23,6 +23,7 @@
                , {commitment        , 32}
                , {peer_pubkey       , 32}
                , {state             , 32}
+               , {fate_code         , not_applicable}
                , {poi               , not_applicable}]).
 
 encode_decode_test_() ->