diff --git a/bionty/base/entities/_gene.py b/bionty/base/entities/_gene.py
index c388792..54ee6b6 100644
--- a/bionty/base/entities/_gene.py
+++ b/bionty/base/entities/_gene.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from collections.abc import Iterable
 from typing import TYPE_CHECKING, Literal, NamedTuple
 
 import pandas as pd
@@ -96,34 +97,23 @@ def map_legacy_ids(self, values: Iterable) -> MappingResult:
 
 
 class EnsemblGene:
-    def __init__(
-        self,
-        organism: str,
-        version: str,
-        taxa: Literal[
-            "vertebrates", "bacteria", "fungi", "metazoa", "plants", "all"
-        ] = "vertebrates",
-    ) -> None:
+    def __init__(self, organism: str, version: str) -> None:
         """Ensembl Gene mysql.
 
         Args:
-            organism: Name of the organism
-            version: Name of the ensembl DB version, e.g. "release-110"
-            taxa: The taxa of the organism to fetch genes for.
+            organism: a bionty.Organism object
+            version: name of the ensembl DB version, e.g. "release-110"
         """
         self._import()
         import mysql.connector as sql
         from sqlalchemy import create_engine
 
         self._organism = (
-            Organism(version=version, taxa=taxa).lookup().dict().get(organism)  # type:ignore
+            Organism(version=version).lookup().dict().get(organism)  # type:ignore
+        )
+        self._url = (
+            f"mysql+mysqldb://anonymous:@ensembldb.ensembl.org/{self._organism.core_db}"
         )
-        # vertebrates and plants use different ports
-        if taxa == "plants":
-            port = 4157
-        else:
-            port = 3306
-        self._url = f"mysql+mysqldb://anonymous:@ensembldb.ensembl.org:{port}/{self._organism.core_db}"
         self._engine = create_engine(url=self._url)
 
     def _import(self):
@@ -242,10 +232,8 @@ def add_external_db_column(df: pd.DataFrame, ext_db: str, df_col: str):
         df_res = df_res[~df_res["ensembl_gene_id"].isna()]
 
         # if stable_id is not ensembl_gene_id, keep a stable_id column
-        if not all(df_res["ensembl_gene_id"].str.startswith("ENS")):
-            logger.warning(
-                "ensembl_gene_id column not all ENS-prefixed, writing to stable_id column."
-            )
+        if not any(df_res["ensembl_gene_id"].str.startswith("ENS")):
+            logger.warning("no ensembl_gene_id found, writing to table_id column.")
             df_res.insert(0, "stable_id", df_res.pop("ensembl_gene_id"))
             df_res = df_res.sort_values("stable_id").reset_index(drop=True)
         else:
diff --git a/bionty/base/entities/_organism.py b/bionty/base/entities/_organism.py
index c577361..6327364 100644
--- a/bionty/base/entities/_organism.py
+++ b/bionty/base/entities/_organism.py
@@ -22,7 +22,9 @@ class Organism(PublicOntology):
 
     def __init__(
         self,
-        taxa: Literal["vertebrates", "bacteria", "fungi", "metazoa", "plants", "all"]
+        organism: Literal[
+            "vertebrates", "bacteria", "fungi", "metazoa", "plants", "all"
+        ]
         | None = None,
         source: Literal["ensembl", "ncbitaxon"] | None = None,
         version: Literal[
@@ -37,11 +39,7 @@ def __init__(
         | None = None,
         **kwargs,
     ):
-        # To support the organism kwarg being passed in getattr access in other parts of the code
-        # https://github.com/laminlabs/bionty/issues/163
-        if kwargs.get("organism") is not None:
-            taxa = kwargs.pop("organism")
-        super().__init__(organism=taxa, source=source, version=version, **kwargs)
+        super().__init__(organism=organism, source=source, version=version, **kwargs)
 
     def _load_df(self) -> pd.DataFrame:
         if self.source == "ensembl":