diff --git a/jedi/api/environment.py b/jedi/api/environment.py
index c8d08993..0854cd1a 100644
--- a/jedi/api/environment.py
+++ b/jedi/api/environment.py
@@ -189,10 +189,15 @@ def _get_executable_path(path, safe=True):
     Returns None if it's not actually a virtual env.
     """
 
-    bin_name = 'Scripts' if os.name == 'nt' else 'bin'
+    if os.name == 'nt':
+        bin_name = 'Scripts'
+        extension = '.exe'
+    else:
+        bin_name = 'bin'
+        extension = ''
     bin_folder = os.path.join(path, bin_name)
     activate = os.path.join(bin_folder, 'activate')
-    python = os.path.join(bin_folder, 'python')
+    python = os.path.join(bin_folder, 'python' + extension)
     if not all(os.path.exists(p) for p in (activate, python)):
         raise InvalidPythonEnvironment("One of bin/activate and bin/python is missing.")
 
diff --git a/test/test_evaluate/test_sys_path.py b/test/test_evaluate/test_sys_path.py
index 224d3471..c4a1b64e 100644
--- a/test/test_evaluate/test_sys_path.py
+++ b/test/test_evaluate/test_sys_path.py
@@ -15,9 +15,14 @@ def test_paths_from_assignment(Script):
         expr_stmt = script._module_node.children[0]
         return set(sys_path._paths_from_assignment(script._get_module(), expr_stmt))
 
-    assert paths('sys.path[0:0] = ["a"]') == {'/foo/a'}
-    assert paths('sys.path = ["b", 1, x + 3, y, "c"]') == {'/foo/b', '/foo/c'}
-    assert paths('sys.path = a = ["a"]') == {'/foo/a'}
+    # Normalize paths for Windows.
+    path_a = os.path.abspath('/foo/a')
+    path_b = os.path.abspath('/foo/b')
+    path_c = os.path.abspath('/foo/c')
+
+    assert paths('sys.path[0:0] = ["a"]') == {path_a}
+    assert paths('sys.path = ["b", 1, x + 3, y, "c"]') == {path_b, path_c}
+    assert paths('sys.path = a = ["a"]') == {path_a}
 
     # Fail for complicated examples.
     assert paths('sys.path, other = ["a"], 2') == set()