diff --git a/docs/api.md b/docs/api.md
index 8f41ba6b28..50fa4da597 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -14,8 +14,8 @@ connectorx.read_sql(conn: Union[str, Dict[str, str]], query: Union[List[str], st
 - `protocol: str = "binary"`: The protocol used to fetch data from source, default is `binary`. Check out [here](./databases.md) to see more details.
 - `partition_on: Optional[str]`: The column to partition the result.
 - `partition_range: Optional[Tuple[int, int]]`: The value range of the partition column.
-- `partition_num: Optioinal[int]`: The number of partitions to generate.
-- `index_col: Optioinal[str]`: The index column to set for the result dataframe. Only applicable when `return_type` is `pandas`, `modin` or `dask`. 
+- `partition_num: Optional[int]`: The number of partitions to generate.
+- `index_col: Optional[str]`: The index column to set for the result dataframe. Only applicable when `return_type` is `pandas`, `modin` or `dask`. 
 
 
 ## Examples