diff --git a/python3/11_File_Operations/07_db_files/d_queries.py b/python3/11_File_Operations/07_db_files/d_queries.py
index 94453a44..917e02b3 100644
--- a/python3/11_File_Operations/07_db_files/d_queries.py
+++ b/python3/11_File_Operations/07_db_files/d_queries.py
@@ -17,10 +17,10 @@ def select_all_records_by_author(cursor, author):
 
 def select_using_like(cursor, text):
     print("\nLIKE query results:\n")
-    sql = f"""
+    sql = """
     SELECT * FROM books
-    WHERE title LIKE '{text}%'"""
-    cursor.execute(sql)
+    WHERE title LIKE ?"""
+    cursor.execute(sql, ('{0}%'.format(text), ))
     print(cursor.fetchall())
 
 
diff --git a/python3/11_File_Operations/07_db_files/f_delete_record.py b/python3/11_File_Operations/07_db_files/f_delete_record.py
index e8f40758..6bbe42ac 100644
--- a/python3/11_File_Operations/07_db_files/f_delete_record.py
+++ b/python3/11_File_Operations/07_db_files/f_delete_record.py
@@ -5,11 +5,11 @@ def delete_author(author):
     conn = sqlite3.connect("books.db")
     cursor = conn.cursor()
 
-    sql = f"""
+    sql = """
     DELETE FROM books
-    WHERE author = '{author}'
+    WHERE author = ?
     """
-    cursor.execute(sql)
+    cursor.execute(sql, (author, ))
     conn.commit()
 
 
diff --git a/python3/Projects/Arc_Listener.py b/python3/Projects/Arc_Listener.py
index ee2105ed..9dd61f78 100644
--- a/python3/Projects/Arc_Listener.py
+++ b/python3/Projects/Arc_Listener.py
@@ -34,7 +34,6 @@ def video_report(self, report_json):
         upc = report_json["upc"]
         musicvideo_uuid = report_json["musicvideouuid"]
         isrc_dp_uuid = report_json["isrcdpuuid"]
-        folder = report_json["timestamp"]
         error_spec = report_json["error_spec"]
 
         strDataCapture = "Captured Data for video: " + upc + " and " + unique_key + "\n"
@@ -45,10 +44,8 @@ def video_report(self, report_json):
 
         cursor = db.cursor()
 
-        sql = (
-            f"select stateId from videos where upc = '{upc}' and isrc = '{unique_key}'"
-        )
-        cursor.execute(sql)
+        sql = "select stateId from videos where upc = ? and isrc = ?"
+        cursor.execute(sql, (upc, unique_key, ))
 
         video = cursor.fetchall()