diff --git a/awscli/botocore/credentials.py b/awscli/botocore/credentials.py
index 54470fc33f7d..f99ea5e5afb8 100644
--- a/awscli/botocore/credentials.py
+++ b/awscli/botocore/credentials.py
@@ -1495,6 +1495,7 @@ def load(self):
                     access_key, secret_key = self._extract_creds_from_mapping(
                         credentials, self.ACCESS_KEY, self.SECRET_KEY
                     )
+                    register_feature_id('CREDENTIALS_BOTO2_CONFIG_FILE')
                     return Credentials(
                         access_key, secret_key, method=self.METHOD
                     )
diff --git a/awscli/botocore/useragent.py b/awscli/botocore/useragent.py
index c7798e2b3486..00793a04bfa7 100644
--- a/awscli/botocore/useragent.py
+++ b/awscli/botocore/useragent.py
@@ -91,6 +91,7 @@
     'CREDENTIALS_SSO': 's',
     'CREDENTIALS_PROFILE_SSO_LEGACY': 't',
     'CREDENTIALS_SSO_LEGACY': 'u',
+    'CREDENTIALS_BOTO2_CONFIG_FILE': 'x',
     'CREDENTIALS_HTTP': 'z',
     'CREDENTIALS_IMDS': '0',
     'BEARER_SERVICE_ENV_VARS': '3',
diff --git a/tests/functional/botocore/test_credentials.py b/tests/functional/botocore/test_credentials.py
index 09313b464f98..ffa3f4c0fa15 100644
--- a/tests/functional/botocore/test_credentials.py
+++ b/tests/functional/botocore/test_credentials.py
@@ -1183,6 +1183,34 @@ def add_credential_response(self, stubber):
             [],
             'e',
         ),
+        # Test case 5: Credentials set with Boto2 config
+        (
+            {},
+            {},
+            [
+                patch(
+                    "botocore.configloader.raw_config_parse",
+                    return_value={
+                        "Credentials": {
+                            "aws_access_key_id": "FAKEACCESSKEY",
+                            "aws_secret_access_key": "FAKESECRETKEY",
+                        }
+                    },
+                ),
+                patch(
+                    "botocore.credentials.ConfigProvider.load",
+                    return_value=None,
+                ),
+                patch(
+                    "botocore.credentials.SharedCredentialProvider.load",
+                    return_value=None,
+                ),
+                                patch(
+                    "botocore.credentials.EnvProvider.load", return_value=None
+                ),
+            ],
+            'x',
+        ),
         # Test case 6: Credentials set via process provider
         (
             {},