diff --git a/Pipfile b/Pipfile
index f5903457f589fb02d40fc4491174175d7d399740..ad580175866db1894519091fc7fa0126d9ea5f8b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -41,6 +41,7 @@ funcy = "*"
 vprof = "*"
 
 [packages]
+attrs = "==19.1.0"
 aiodns = "*"
 aiohttp = "*"
 aredis = "*"
diff --git a/jussi/validators.py b/jussi/validators.py
index efd8e9f6c83df70a1e40c4d591555b409ef54400..9e5c08691ae5f89f80d98aad46a1543474dc5754 100644
--- a/jussi/validators.py
+++ b/jussi/validators.py
@@ -34,7 +34,7 @@ NONE_TYPE = type(None)
 ID_TYPES = (int, str, float, NONE_TYPE)
 PARAMS_TYPES = (list, dict, NONE_TYPE)
 
-CUSTOM_JSON_SIZE_LIMIT = 2000
+CUSTOM_JSON_SIZE_LIMIT = 8192
 CUSTOM_JSON_FOLLOW_RATE = 2
 
 BROADCAST_TRANSACTION_METHODS = {
@@ -199,7 +199,7 @@ def limit_broadcast_transaction_request(request: JSONRPCRequest, limits=None) ->
 
 
 def limit_custom_json_op_length(ops: list, size_limit=None):
-    if any(len(op[1]['json']) > size_limit for op in ops):
+    if any(len(op[1]['json'].encode('utf-8')) > size_limit for op in ops):
         raise JussiCustomJsonOpLengthError(size_limit=size_limit)
 
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 091ddc99c6ebbbd5aa3b27101bcbf479e51ce44d..0b8a66e7a9f3cb0a66e5be1b408cd932439f01be 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1594,7 +1594,7 @@ INVALID_BROADCAST_TRANSACTIONS = [
                          {
                              "required_auths": [],
                              "id": "follow",
-                             "json": 'a' * 2001,
+                             "json": 'a' * 8193,
                              "required_posting_auths": ["steemit"]
                          }
                      ]
@@ -1666,7 +1666,7 @@ INVALID_BROADCAST_TRANSACTIONS = [
                             {
                                 "required_auths": [],
                                 "id": "follow",
-                                "json": 'a' * 2001,
+                                "json": 'a' * 8193,
                                 "required_posting_auths": ["steemit"]
                             }
                         ]
diff --git a/tests/test_validators.py b/tests/test_validators.py
index 428900301fc1f17a50e6394b7d742a7cf01bbcfb..a5ce85c02a0b1e14760a698fda8a869df2e0de84 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -294,7 +294,16 @@ def test_is_valid_jussi_response_using_steemd(steemd_request_and_response):
         {
             "required_auths": [],
             "id": "follow",
-            "json": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
+            "json": "a"*8192,
+            "required_posting_auths": ["steemit"]
+        }
+    ]], False),
+    ([[
+        'custom_json',
+        {
+            "required_auths": [],
+            "id": "follow",
+            "json": "😂"*2048,
             "required_posting_auths": ["steemit"]
         }
     ]], False),
@@ -302,9 +311,9 @@ def test_is_valid_jussi_response_using_steemd(steemd_request_and_response):
 def test_is_valid_custom_json_op_length(ops, expected):
     if expected is False:
         with pytest.raises(JussiCustomJsonOpLengthError):
-            limit_custom_json_op_length(ops, size_limit=1000)
+            limit_custom_json_op_length(ops, size_limit=8191)
     else:
-        limit_custom_json_op_length(ops, size_limit=1000)
+        limit_custom_json_op_length(ops, size_limit=100)
 
 
 @pytest.mark.parametrize('ops, expected', [