diff --git a/src/aeb_fate_generate_ops.erl b/src/aeb_fate_generate_ops.erl
index 38d5ed7..ea62862 100644
--- a/src/aeb_fate_generate_ops.erl
+++ b/src/aeb_fate_generate_ops.erl
@@ -72,9 +72,9 @@ ops_defs() ->
     , { 'MOD',                 16#1a,  false,   3, [a,a,a],          modulo,                   {integer, integer}, integer, "Arg0 := Arg1 mod Arg2."}
     , { 'POW',                 16#1b,  false,   3, [a,a,a],             pow,                   {integer, integer}, integer, "Arg0 := Arg1  ^ Arg2."}
     , { 'STORE',               16#1c,  false,   3, [a,a],             store,                   {integer, integer}, integer, "Arg0 := Arg1."}
-    , { 'SHA3',                16#1d,  false,   3, [a],                sha3,                             {string},    hash, "Arg0 := sha3(Arg1)."}
-    , { 'SHA256',              16#1e,  false,   3, [a],              sha256,                             {string},    hash, "Arg0 := sha256(Arg1)."}
-    , { 'BLAKE2B',             16#1f,  false,   3, [a],             blake2b,                             {string},    hash, "Arg0 := blake2b(Arg1)."}
+    , { 'SHA3',                16#1d,  false,   3, [a,a],              sha3,                             {string},    hash, "Arg0 := sha3(Arg1)."}
+    , { 'SHA256',              16#1e,  false,   3, [a,a],            sha256,                             {string},    hash, "Arg0 := sha256(Arg1)."}
+    , { 'BLAKE2B',             16#1f,  false,   3, [a,a],           blake2b,                             {string},    hash, "Arg0 := blake2b(Arg1)."}
     , { 'LT',                  16#20,  false,   3, [a,a,a],              lt,                   {integer, integer}, boolean, "Arg0 := Arg1  < Arg2."}
     , { 'GT',                  16#21,  false,   3, [a,a,a],              gt,                   {integer, integer}, boolean, "Arg0 := Arg1  > Arg2."}
     , { 'EQ',                  16#22,  false,   3, [a,a,a],              eq,                   {integer, integer}, boolean, "Arg0 := Arg1  = Arg2."}