diff --git a/.vscode/launch.json b/.vscode/launch.json
index 13dd9c7..30abaec 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -11,7 +11,7 @@
             "program": "fasta_filter.py",
             "args": [
                 "reference_standards.fas",
-                "reference_stasndards_filtered.fas",
+                "reference_standards_filtered.fas",
                 "-c", "rt"
             ],
             "console": "integratedTerminal",
diff --git a/fasta_filter.py b/fasta_filter.py
index b3abbcf..0268ed9 100755
--- a/fasta_filter.py
+++ b/fasta_filter.py
@@ -14,8 +14,8 @@ def main(args):
             kept_records.append(s_record)
         elif args.property == "all" and not (
             args.contains in s_record.id
-            and args.contains in s_record.name
-                and args.contains in s_record.description):
+            or args.contains in s_record.name
+                or args.contains in s_record.description):
             kept_records.append(s_record)
     SeqIO.write(
         kept_records,
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..808664b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+Bio==1.5.6