diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 7b0a5d6b6dfc4..9606a741cc058 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -265,7 +265,7 @@ def build_triple(self):
         try:
             ostype = subprocess.check_output(['uname', '-s']).strip()
             cputype = subprocess.check_output(['uname', '-m']).strip()
-        except subprocess.CalledProcessError:
+        except (subprocess.CalledProcessError, WindowsError):
             if sys.platform == 'win32':
                 return 'x86_64-pc-windows-msvc'
             err = "uname not found"