diff --git a/aws_lambda_powertools/logging/logger.py b/aws_lambda_powertools/logging/logger.py
index 2a4f2971248..b248055aacf 100644
--- a/aws_lambda_powertools/logging/logger.py
+++ b/aws_lambda_powertools/logging/logger.py
@@ -44,7 +44,7 @@ class Logger:
     ---------------------
     POWERTOOLS_SERVICE_NAME : str
         service name
-    LOG_LEVEL: str, int
+    LOG_LEVEL: str
         logging level (e.g. INFO, DEBUG)
     POWERTOOLS_LOGGER_SAMPLE_RATE: float
         samping rate ranging from 0 to 1, 1 being 100% sampling
diff --git a/tests/functional/test_logger.py b/tests/functional/test_logger.py
index fa804a7c979..083220ccf8c 100644
--- a/tests/functional/test_logger.py
+++ b/tests/functional/test_logger.py
@@ -333,3 +333,14 @@ def test_logger_level_as_int():
 
     # THEN we should be expected int (20, in this case)
     assert logger.level == logging.INFO
+
+
+def test_logger_level_env_var_as_int(monkeypatch):
+    # GIVEN Logger is initialized
+    # WHEN log level is explicitly defined via LOG_LEVEL env as int
+    # THEN Logger should propagate ValueError
+    # since env vars can only be string
+    # and '50' is not a correct log level
+    monkeypatch.setenv("LOG_LEVEL", 50)
+    with pytest.raises(ValueError, match="Unknown level: '50'"):
+        Logger()