diff --git a/src/kleinanzeigen_bot/extract.py b/src/kleinanzeigen_bot/extract.py
index da61770..1f5bda9 100644
--- a/src/kleinanzeigen_bot/extract.py
+++ b/src/kleinanzeigen_bot/extract.py
@@ -466,7 +466,9 @@ class AdExtractor(WebScrapingMixin):
         """
 
         # e.g. "art_s:lautsprecher_kopfhoerer|condition_s:like_new|versand_s:t"
-        special_attributes_str = belen_conf["universalAnalyticsOpts"]["dimensions"]["dimension108"]
+        special_attributes_str = belen_conf["universalAnalyticsOpts"]["dimensions"].get("dimension108")
+        if not special_attributes_str:
+            return {}
         special_attributes = dict(item.split(":") for item in special_attributes_str.split("|") if ":" in item)
         special_attributes = {k: v for k, v in special_attributes.items() if not k.endswith(".versand_s") and k != "versand_s"}
         return special_attributes
diff --git a/tests/unit/test_extract.py b/tests/unit/test_extract.py
index d91da9f..49b7295 100644
--- a/tests/unit/test_extract.py
+++ b/tests/unit/test_extract.py
@@ -754,6 +754,20 @@ class TestAdExtractorCategory:
         assert "art_s" in result
         assert result["art_s"] == "maedchen"
 
+    @pytest.mark.asyncio
+    # pylint: disable=protected-access
+    async def test_extract_special_attributes_missing_dimension108(self, extractor:AdExtractor) -> None:
+        """Test extraction of special attributes when dimension108 key is missing."""
+        belen_conf:dict[str, Any] = {
+            "universalAnalyticsOpts": {
+                "dimensions": {
+                    # dimension108 key is completely missing
+                }
+            }
+        }
+        result = await extractor._extract_special_attributes_from_ad_page(belen_conf)
+        assert result == {}
+
 
 class TestAdExtractorContact:
     """Tests for contact information extraction."""