diff --git a/mythril/analysis/report.py b/mythril/analysis/report.py
index 1ce5219b..44fede86 100644
--- a/mythril/analysis/report.py
+++ b/mythril/analysis/report.py
@@ -3,7 +3,6 @@ import logging
 import json
 import operator
 from jinja2 import PackageLoader, Environment
-
 from typing import Dict, List
 import hashlib
 
diff --git a/mythril/support/source_support.py b/mythril/support/source_support.py
index 68d7a6aa..51d94ee8 100644
--- a/mythril/support/source_support.py
+++ b/mythril/support/source_support.py
@@ -48,5 +48,10 @@ class Source:
         else:
             assert False  # Fail hard
 
-    def get_source_index(self, bytecode_hash):
+    def get_source_index(self, bytecode_hash: str) -> int:
+        """
+        Find the contract index in the list
+        :param bytecode_hash: The contract hash
+        :return: The index of the contract in the _source_hash list
+        """
         return self._source_hash.index(bytecode_hash)
diff --git a/mythril/support/support_utils.py b/mythril/support/support_utils.py
index 6912ddd3..1edbefff 100644
--- a/mythril/support/support_utils.py
+++ b/mythril/support/support_utils.py
@@ -26,7 +26,7 @@ class Singleton(type):
         return cls._instances[cls]
 
 
-def get_code_hash(code):
+def get_code_hash(code: str) -> str:
     """
     :param code: bytecode
     :return: Returns hash of the given bytecode