diff --git a/poetry/masonry/publishing/publisher.py b/poetry/masonry/publishing/publisher.py
index 3ff39a7c840..b62b3addbe6 100644
--- a/poetry/masonry/publishing/publisher.py
+++ b/poetry/masonry/publishing/publisher.py
@@ -49,16 +49,12 @@ def publish(self, repository_name, username, password, cert=None, client_cert=No
             repository_name = "pypi"
         else:
             # Retrieving config information
-            repository = self._poetry.config.get(
-                "repositories.{}".format(repository_name)
-            )
-            if repository is None:
+            url = self._poetry.config.get("repositories.{}.url".format(repository_name))
+            if url is None:
                 raise RuntimeError(
                     "Repository {} is not defined".format(repository_name)
                 )
 
-            url = repository["url"]
-
         if not (username and password):
             # Check if we have a token first
             token = self._password_manager.get_pypi_token(repository_name)
diff --git a/tests/masonry/publishing/test_publisher.py b/tests/masonry/publishing/test_publisher.py
index 4058e255ae4..18af37f1636 100644
--- a/tests/masonry/publishing/test_publisher.py
+++ b/tests/masonry/publishing/test_publisher.py
@@ -1,3 +1,5 @@
+import os
+
 import pytest
 
 from poetry.factory import Factory
@@ -119,3 +121,21 @@ def test_publish_uses_client_cert(fixture_dir, mocker, config):
         ("https://foo.bar",),
         {"cert": None, "client_cert": Path(client_cert)},
     ] == uploader_upload.call_args
+
+
+def test_publish_read_from_environment_variable(fixture_dir, environ, mocker, config):
+    os.environ["POETRY_REPOSITORIES_FOO_URL"] = "https://foo.bar"
+    os.environ["POETRY_HTTP_BASIC_FOO_USERNAME"] = "bar"
+    os.environ["POETRY_HTTP_BASIC_FOO_PASSWORD"] = "baz"
+    uploader_auth = mocker.patch("poetry.masonry.publishing.uploader.Uploader.auth")
+    uploader_upload = mocker.patch("poetry.masonry.publishing.uploader.Uploader.upload")
+    poetry = Factory().create_poetry(fixture_dir("sample_project"))
+    publisher = Publisher(poetry, NullIO())
+
+    publisher.publish("foo", None, None)
+
+    assert [("bar", "baz")] == uploader_auth.call_args
+    assert [
+        ("https://foo.bar",),
+        {"cert": None, "client_cert": None},
+    ] == uploader_upload.call_args