diff --git a/HISTORY.rst b/HISTORY.rst
index a96d6374..30c9ef9f 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -20,6 +20,7 @@ PlatformIO Core 5
 - Fixed an issue when the system environment variable does not override a project configuration option (`issue #4125 <https://github.com/platformio/platformio-core/issues/4125>`_)
 - Fixed an issue when referencing ``*_dir`` option from a custom project configuration environment (`issue #4110 <https://github.com/platformio/platformio-core/issues/4110>`_)
 - Fixed an issue with the CLion template that generated a broken CMake file if user's home directory contained an unescaped backslash (`issue #4071 <https://github.com/platformio/platformio-core/issues/4071>`_)
+- Fixed an issue with wrong detecting Windows architecture when Python 32bit is used (`issue #4134 <https://github.com/platformio/platformio-core/issues/4134>`_)
 
 5.2.3 (2021-11-05)
 ~~~~~~~~~~~~~~~~~~
diff --git a/platformio/util.py b/platformio/util.py
index 8ab144a4..90bce628 100644
--- a/platformio/util.py
+++ b/platformio/util.py
@@ -92,8 +92,8 @@ def singleton(cls):
 def get_systype():
     type_ = platform.system().lower()
     arch = platform.machine().lower()
-    if type_ == "windows":
-        arch = "amd64" if platform.architecture()[0] == "64bit" else "x86"
+    if type_ == "windows" and "x86" in arch:
+        arch = "amd64" if "64" in arch else "x86"
     return "%s_%s" % (type_, arch) if arch else type_