diff --git a/poetry/installation/pip_installer.py b/poetry/installation/pip_installer.py
index 1afd23f3443..c46ad1ce0e7 100644
--- a/poetry/installation/pip_installer.py
+++ b/poetry/installation/pip_installer.py
@@ -138,6 +138,9 @@ def requirement(self, package, formatted=False):
                 package.source_url, package.source_reference, package.name
             )
 
+        if package.source_type == "url":
+            return "{}#egg={}".format(package.source_url, package.name)
+
         return "{}=={}".format(package.name, package.version)
 
     def create_temporary_requirement(self, package):
diff --git a/tests/installation/test_pip_installer.py b/tests/installation/test_pip_installer.py
index b901bf7f560..0f77b65ed4e 100644
--- a/tests/installation/test_pip_installer.py
+++ b/tests/installation/test_pip_installer.py
@@ -26,6 +26,19 @@ def test_requirement():
     assert expected == result
 
 
+def test_requirement_source_type_url():
+    installer = PipInstaller(NullEnv(), NullIO(), Pool())
+
+    foo = Package("foo", "0.0.0")
+    foo.source_type = "url"
+    foo.source_url = "https://somehwere.com/releases/foo-1.0.0.tar.gz"
+
+    result = installer.requirement(foo, formatted=True)
+    expected = "{}#egg={}".format(foo.source_url, foo.name)
+
+    assert expected == result
+
+
 def test_install_with_non_pypi_default_repository():
     pool = Pool()