diff --git a/src/poetry/utils/appdirs.py b/src/poetry/utils/appdirs.py
index 2d2f3f21985..7187f14c55a 100644
--- a/src/poetry/utils/appdirs.py
+++ b/src/poetry/utils/appdirs.py
@@ -208,7 +208,9 @@ def _get_win_folder_with_ctypes(csidl_name: str) -> str:
     }[csidl_name]
 
     buf = ctypes.create_unicode_buffer(1024)
-    windll = ctypes.windll  # type: ignore[attr-defined]
+    if sys.platform != "win32":  # for mypy
+        return ""
+    windll = ctypes.windll
     windll.shell32.SHGetFolderPathW(None, csidl_const, None, 0, buf)
 
     # Downgrade to short path name if have highbit chars. See