diff --git a/test cases/common/33 run program/check-mingw.py b/test cases/common/33 run program/check-mingw.py
index 0a37689c07a8..9641c5216696 100755
--- a/test cases/common/33 run program/check-mingw.py	
+++ b/test cases/common/33 run program/check-mingw.py	
@@ -1,6 +1,8 @@
 #!/usr/bin/env python3
 
-import os
+import os, sys
+
+sys.stderr.write(sys.executable + '\n')
 
 if 'MSYSTEM' in os.environ:
     print(os.environ['MSYSTEM'])