diff --git a/google_sheets/data_processing/processing.py b/google_sheets/data_processing/processing.py
index 54e0449..1e16ff7 100644
--- a/google_sheets/data_processing/processing.py
+++ b/google_sheets/data_processing/processing.py
@@ -285,10 +285,13 @@ def _validate_output_data_ad(df: pd.DataFrame) -> pd.DataFrame:  # noqa: C901
     description_columns = [col for col in df.columns if "Description" in col]
 
     for index, row in df.iterrows():
-        # Check for duplicate headlines and descriptions
-        if len(set(row[headline_columns])) != len(row[headline_columns]):
+        headlines = [headline for headline in row[headline_columns] if headline]
+        descriptions = [
+            description for description in row[description_columns] if description
+        ]
+        if len(set(headlines)) != len(headlines):
             df.loc[index, "Issues"] += "Duplicate headlines found.\n"
-        if len(set(row[description_columns])) != len(row[description_columns]):
+        if len(set(descriptions)) != len(descriptions):
             df.loc[index, "Issues"] += "Duplicate descriptions found.\n"
 
         # Check for the number of headlines and descriptions
diff --git a/tests/data_processing/test_processing.py b/tests/data_processing/test_processing.py
index e5481e2..32a56cd 100644
--- a/tests/data_processing/test_processing.py
+++ b/tests/data_processing/test_processing.py
@@ -515,6 +515,8 @@ def test_process_campaign_data_f(
                     "Headline 1": ["H1", "H1", "H1", "H1"],
                     "Headline 2": ["H2", "H2", "H2", "H2"],
                     "Headline 3": ["H3", "H3", "H3", "H3"],
+                    "Headline 4": ["", "", "", ""],
+                    "Headline 5": ["", "", "", ""],
                     "Description 1": ["D1", "D1", "D1", "D1"],
                     "Description 2": ["D2", "D2", "D2", "D2"],
                     "Path 1": ["P1", "P1", "P1", "P1"],