diff --git a/sqli/dao/student.py b/sqli/dao/student.py
index d41ef885..60b6ec90 100644
--- a/sqli/dao/student.py
+++ b/sqli/dao/student.py
@@ -2,7 +2,6 @@
 
 from aiopg.connection import Connection
 
-
 class Student(NamedTuple):
     id: int
     name: str
@@ -27,21 +26,18 @@ async def get_many(conn: Connection, limit: Optional[int] = None,
         q = 'SELECT id, name FROM students'
         params = {}
         if limit is not None:
-            q += ' LIMIT + %(limit)s '
+            q += ' LIMIT %s'
             params['limit'] = limit
         if offset is not None:
-            q += ' OFFSET + %(offset)s '
+            q += ' OFFSET %s'
             params['offset'] = offset
         async with conn.cursor() as cur:
-            await cur.execute(q, params)
+            await cur.execute(q, (params.get('limit'), params.get('offset')))
             results = await cur.fetchall()
             return [Student.from_raw(r) for r in results]
 
     @staticmethod
     async def create(conn: Connection, name: str):
-        q = ("INSERT INTO students (name) "
-             "VALUES ('%(name)s')" % {'name': name})
+        q = "INSERT INTO students (name) VALUES (%s)"
         async with conn.cursor() as cur:
-            await cur.execute(q)
-
-
+            await cur.execute(q, (name,))