diff --git a/examples/load_credentials_file.py b/examples/load_credentials_file.py
index a3de26d6b6bcb8da0d8451933bb156a64430d239..48212c64a6296cf6e7b8a336ce8921fc962ec260 100644
--- a/examples/load_credentials_file.py
+++ b/examples/load_credentials_file.py
@@ -3,14 +3,9 @@ import sys
 from duniterpy.key import SigningKey
 
 if __name__ == "__main__":
-
     if len(sys.argv) < 2:
-        print(
-            """
-        Usage:
-            python load_credentials_file.py FILEPATH
-        """
-        )
+        print("Usage: python load_credentials_file.py FILEPATH")
+        sys.exit(1)
 
     # capture filepath argument
     credentials_filepath = sys.argv[1]
diff --git a/examples/load_scuttlebutt_file.py b/examples/load_scuttlebutt_file.py
index 675b205cd2742d1dc2ecf2ea57ce1fd0ea84172d..cd6d192c3ed43bd4d405708db6afa06f5ee86584 100644
--- a/examples/load_scuttlebutt_file.py
+++ b/examples/load_scuttlebutt_file.py
@@ -3,14 +3,9 @@ import sys
 from duniterpy.key import SigningKey
 
 if __name__ == "__main__":
-
     if len(sys.argv) < 2:
-        print(
-            """
-        Usage:
-            python load_scuttlebutt_file.py FILEPATH
-        """
-        )
+        print("Usage: python load_scuttlebutt_file.py FILEPATH")
+        sys.exit(1)
 
     # capture filepath argument
     scuttlebutt_filepath = sys.argv[1]