diff --git a/poetry/utils/env.py b/poetry/utils/env.py
index 4a6f42291ac..dee885fe82f 100644
--- a/poetry/utils/env.py
+++ b/poetry/utils/env.py
@@ -1085,7 +1085,7 @@ class Env:
 
     def __init__(self, path: Path, base: Optional[Path] = None) -> None:
         self._is_windows = sys.platform == "win32"
-        self._is_mingw = sysconfig.get_platform() == "mingw"
+        self._is_mingw = sysconfig.get_platform().startswith("mingw")
 
         if not self._is_windows or self._is_mingw:
             bin_dir = "bin"