diff --git a/src/backend/langflow/utils/logger.py b/src/backend/langflow/utils/logger.py
index 060ad9731..6755e53b1 100644
--- a/src/backend/langflow/utils/logger.py
+++ b/src/backend/langflow/utils/logger.py
@@ -25,7 +25,10 @@ def patching(record):
 
 
 def configure(log_level: Optional[str] = None, log_file: Optional[Path] = None):
-    if os.getenv("LANGFLOW_LOG_LEVEL") in VALID_LOG_LEVELS and log_level is None:
+    if (
+        os.getenv("LANGFLOW_LOG_LEVEL", "").upper() in VALID_LOG_LEVELS
+        and log_level is None
+    ):
         log_level = os.getenv("LANGFLOW_LOG_LEVEL")
     if log_level is None:
         log_level = "INFO"