diff --git a/src/core/injections/controller/checks.py b/src/core/injections/controller/checks.py
index c3fae15f5e..82d22df7b1 100755
--- a/src/core/injections/controller/checks.py
+++ b/src/core/injections/controller/checks.py
@@ -73,7 +73,7 @@ def check_waf(url, http_request_method):
   settings.print_data_to_stdout(settings.print_info_msg(info_msg))
   if settings.VERBOSITY_LEVEL >= 1:
     settings.print_data_to_stdout(settings.print_payload(payload))
-  payload = "".join(random.choices(string.ascii_uppercase, k=4)) + "=" + payload
+  payload = "".join(random.sample(string.ascii_uppercase, k=4)) + "=" + payload
   if not "?" in url:
     payload = "?" + payload
   else:
@@ -1997,7 +1997,7 @@ def inappropriate_format(multi_parameters):
 def check_similarities(all_params):
   if settings.IS_JSON:
     try:
-      _ = "".join(random.choices(string.ascii_uppercase, k=6))
+      _ = "".join(random.sample(string.ascii_uppercase, k=6))
       all_params = ','.join(all_params)
       json_data = json.loads(all_params, object_pairs_hook=OrderedDict)
       all_params = flatten(json_data)
diff --git a/src/utils/settings.py b/src/utils/settings.py
index 37a6ed3124..d02b314ecd 100755
--- a/src/utils/settings.py
+++ b/src/utils/settings.py
@@ -262,7 +262,7 @@ def sys_argv_errors():
 DESCRIPTION = "The command injection exploiter"
 AUTHOR  = "Anastasios Stasinopoulos"
 VERSION_NUM = "4.0"
-REVISION = "82"
+REVISION = "83"
 STABLE_RELEASE = False
 VERSION = "v"
 if STABLE_RELEASE: