diff --git a/src-docs/charm_state.py.md b/src-docs/charm_state.py.md
index 143d353..9fb524a 100644
--- a/src-docs/charm_state.py.md
+++ b/src-docs/charm_state.py.md
@@ -5,9 +5,6 @@
 # <kbd>module</kbd> `charm_state.py`
 Module defining the CharmState class which represents the state of the SMTP Integrator charm. 
 
-**Global Variables**
----------------
-- **KNOWN_CHARM_CONFIG**
 
 
 ---
@@ -21,7 +18,7 @@ Exception raised when a charm configuration is found to be invalid.
  
  - <b>`msg`</b> (str):  Explanation of the error. 
 
-<a href="../src/charm_state.py#L56"><img align="right" style="float:right;" src="https://img.shields.io/badge/-source-cccccc?style=flat-square"></a>
+<a href="../src/charm_state.py#L46"><img align="right" style="float:right;" src="https://img.shields.io/badge/-source-cccccc?style=flat-square"></a>
 
 ### <kbd>function</kbd> `__init__`
 
@@ -59,7 +56,7 @@ Represents the state of the SMTP Integrator charm.
  - <b>`transport_security`</b>:  The security protocol to use for the outgoing SMTP relay. 
  - <b>`domain`</b>:  The domain used by the sent emails from SMTP relay. 
 
-<a href="../src/charm_state.py#L89"><img align="right" style="float:right;" src="https://img.shields.io/badge/-source-cccccc?style=flat-square"></a>
+<a href="../src/charm_state.py#L79"><img align="right" style="float:right;" src="https://img.shields.io/badge/-source-cccccc?style=flat-square"></a>
 
 ### <kbd>function</kbd> `__init__`
 
@@ -80,7 +77,7 @@ Initialize a new instance of the CharmState class.
 
 ---
 
-<a href="../src/charm_state.py#L104"><img align="right" style="float:right;" src="https://img.shields.io/badge/-source-cccccc?style=flat-square"></a>
+<a href="../src/charm_state.py#L94"><img align="right" style="float:right;" src="https://img.shields.io/badge/-source-cccccc?style=flat-square"></a>
 
 ### <kbd>classmethod</kbd> `from_charm`
 
diff --git a/src/charm_state.py b/src/charm_state.py
index 593626d..63c2872 100644
--- a/src/charm_state.py
+++ b/src/charm_state.py
@@ -13,16 +13,6 @@
 from charms.smtp_integrator.v0 import smtp
 from pydantic import BaseModel, Field, ValidationError
 
-KNOWN_CHARM_CONFIG = (
-    "host",
-    "port",
-    "user",
-    "password",
-    "auth_type",
-    "transport_security",
-    "domain",
-)
-
 
 class SmtpIntegratorConfig(BaseModel):
     """Represent charm builtin configuration values.
@@ -114,10 +104,9 @@ def from_charm(cls, charm: "ops.CharmBase") -> "CharmState":
         Raises:
             CharmConfigInvalidError: if the charm configuration is invalid.
         """
-        config = {k: v for k, v in charm.config.items() if k in KNOWN_CHARM_CONFIG}
         try:
             # Incompatible with pydantic.AnyHttpUrl
-            valid_config = SmtpIntegratorConfig(**config)  # type: ignore
+            valid_config = SmtpIntegratorConfig(**dict(charm.config.items()))  # type: ignore
         except ValidationError as exc:
             error_fields = set(
                 itertools.chain.from_iterable(error["loc"] for error in exc.errors())
diff --git a/tests/unit/test_charm_state.py b/tests/unit/test_charm_state.py
index 4c972d2..ef4ddd8 100644
--- a/tests/unit/test_charm_state.py
+++ b/tests/unit/test_charm_state.py
@@ -6,20 +6,8 @@
 from unittest.mock import MagicMock
 
 import pytest
-import yaml
 
-from charm_state import KNOWN_CHARM_CONFIG, CharmConfigInvalidError, CharmState
-
-
-def test_known_charm_config():
-    """
-    arrange: none
-    act: none
-    assert: KNOWN_CHARM_CONFIG in the consts module matches the content of config.yaml file.
-    """
-    with open("config.yaml", encoding="utf-8") as config_file:
-        config = yaml.safe_load(config_file)
-    assert sorted(config["options"].keys()) == sorted(KNOWN_CHARM_CONFIG)
+from charm_state import CharmConfigInvalidError, CharmState
 
 
 def test_charm_state_from_charm():