diff --git a/DIRECTORY.md b/DIRECTORY.md
index 16244e6ad08e..550920c0fc39 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -114,6 +114,7 @@
   * [Harris Corner](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/harris_corner.py)
   * [Mean Threshold](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/mean_threshold.py)
   * [Mosaic Augmentation](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/mosaic_augmentation.py)
+  * [Pooling Functions](https://github.com/TheAlgorithms/Python/blob/master/computer_vision/pooling_functions.py)
 
 ## Conversions
   * [Binary To Decimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/binary_to_decimal.py)
diff --git a/web_programming/currency_converter.py b/web_programming/currency_converter.py
index 447595b0b646..6fcc60e8feeb 100644
--- a/web_programming/currency_converter.py
+++ b/web_programming/currency_converter.py
@@ -10,9 +10,11 @@
 URL_BASE = "https://www.amdoren.com/api/currency.php"
 TESTING = os.getenv("CI", False)
 API_KEY = os.getenv("AMDOREN_API_KEY", "")
-if not API_KEY and not TESTING:
-    raise KeyError("Please put your API key in an environment variable.")
 
+if not API_KEY and not TESTING:
+    raise KeyError(
+        "API key must be provided in the 'AMDOREN_API_KEY' environment variable."
+    )
 
 # Currency and their description
 list_of_currencies = """