diff --git a/scripts/kilt/anserini_retriever.py b/scripts/kilt/anserini_retriever.py
index 0406ce331..e1a1b0b45 100644
--- a/scripts/kilt/anserini_retriever.py
+++ b/scripts/kilt/anserini_retriever.py
@@ -63,7 +63,7 @@ def _get_predictions_thread(arguments):
         doc_scores = []
 
         if use_bigrams:
-            tokens = filter(lambda word: word not in STOPWORDS, word_tokenize(query))
+            tokens = filter(lambda word: word.lower() not in STOPWORDS, word_tokenize(query))
             if stem_bigrams:
                 tokens = map(stemmer.stem, tokens)
             bigram_query = bigrams(tokens)
diff --git a/scripts/kilt/convert_kilt_dpr_to_pyserini_format.py b/scripts/kilt/convert_kilt_dpr_to_pyserini_format.py
new file mode 100644
index 000000000..f71eb9cd8
--- /dev/null
+++ b/scripts/kilt/convert_kilt_dpr_to_pyserini_format.py
@@ -0,0 +1,30 @@
+import argparse
+import pickle
+import csv
+from tqdm import tqdm
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='Convert KILT-dpr corpus into the docids file read by pyserini-dpr')
+    parser.add_argument('--input', required=True, help='Path to the kilt_w100_title.tsv file')
+    parser.add_argument('--mapping', required=True, help='Path to the mapping_KILT_title.p file')
+    parser.add_argument('--output', required=True, help='Name and path of the output file')
+
+    args = parser.parse_args()
+
+    KILT_mapping = pickle.load(open(args.mapping, "rb"))
+
+    not_found = set()
+    with open(args.input, 'r') as f, open(args.output, 'w') as outp:
+        tsv = csv.reader(f, delimiter='\t')
+        next(tsv)  # skip headers
+        for row in tqdm(tsv, mininterval=10.0, maxinterval=20.0):
+            title = row[2]
+            if title not in KILT_mapping:
+                not_found.add(title)
+                _ = outp.write('N/A\n')
+            else:
+                _ = outp.write(f'{KILT_mapping[title]}\n')
+
+    print('Done!')
+    print(f'Not found: {not_found}')
diff --git a/scripts/kilt/convert_kilt_to_document_jsonl.py b/scripts/kilt/convert_kilt_to_document_jsonl.py
index 045ed5225..8acb5297e 100644
--- a/scripts/kilt/convert_kilt_to_document_jsonl.py
+++ b/scripts/kilt/convert_kilt_to_document_jsonl.py
@@ -26,7 +26,7 @@
             doc["id"] = raw["_id"]
             doc["contents"] = "".join(raw["text"])
             if args.bigrams:
-                tokens = filter(lambda word: word not in STOPWORDS, word_tokenize(doc["contents"]))
+                tokens = filter(lambda word: word.lower() not in STOPWORDS, word_tokenize(doc["contents"]))
                 if args.stem:
                     tokens = map(stemmer.stem, tokens)
                 bigram_doc = bigrams(tokens)
diff --git a/scripts/kilt/convert_kilt_to_passage_jsonl.py b/scripts/kilt/convert_kilt_to_passage_jsonl.py
index 80205fcde..fe482f3d1 100644
--- a/scripts/kilt/convert_kilt_to_passage_jsonl.py
+++ b/scripts/kilt/convert_kilt_to_passage_jsonl.py
@@ -42,7 +42,7 @@
                 doc["id"] = f"{raw['_id']}-{i}"
                 p = texts[i]
                 if args.bigrams:
-                    tokens = filter(lambda word: word not in STOPWORDS, word_tokenize(p))
+                    tokens = filter(lambda word: word.lower() not in STOPWORDS, word_tokenize(p))
                     if args.stem:
                         tokens = map(stemmer.stem, tokens)
                     bigram_doc = bigrams(tokens)