diff --git a/helpers.py b/helpers.py
index 3df33a25..045fe407 100644
--- a/helpers.py
+++ b/helpers.py
@@ -983,14 +983,16 @@ def evaluate_branche_chatgpt(crm_branche, beschreibung, wiki_branche, wiki_kateg
     parsed_branch = False
     parsed_confidence = False
 
-    for line in lines:
+for line in lines:
         line_stripped = line.strip()
-        # NEU: Flexibleres Parsing mit Regex, ignoriert Groß/Kleinschreibung
+        line_lower = line_stripped.lower() # WICHTIG: Variable wieder einführen
+
+        # Flexibleres Parsing mit Regex, ignoriert Groß/Kleinschreibung
         branch_match = re.match(r"^(Branche|Branchenzuordnung):\s*(.*)", line_stripped, re.IGNORECASE)
         if branch_match:
             suggested_branch = branch_match.group(2).strip().strip('"\'')
             parsed_branch = True
-        elif line_stripped.lower().startswith("konfidenz:"):
+        elif line_lower.startswith("konfidenz:"):
             confidence_text = line_stripped.split(":", 1)[1].strip().strip('"\'')
             valid_confidences = ["hoch", "mittel", "niedrig"]
             if confidence_text.lower() in valid_confidences: