diff --git a/mythril/ethereum/util.py b/mythril/ethereum/util.py
index 0fd72dcb..a6e1d874 100644
--- a/mythril/ethereum/util.py
+++ b/mythril/ethereum/util.py
@@ -33,7 +33,7 @@ def get_solc_json(file, solc_binary="solc", solc_settings_json=None):
     :param solc_settings_json:
     :return:
     """
-    cmd = [solc_binary, "--standard-json", "--allow-paths", "."]
+    cmd = [solc_binary, "--optimize", "--standard-json", "--allow-paths", "."]
 
     settings = json.loads(solc_settings_json) if solc_settings_json else {}
     settings.update(