diff --git a/utils/lit/lit/TestingConfig.py b/utils/lit/lit/TestingConfig.py
index 440375a588b..0d9bc00a835 100644
--- a/utils/lit/lit/TestingConfig.py
+++ b/utils/lit/lit/TestingConfig.py
@@ -17,6 +17,7 @@ class TestingConfig:
                 'PATHEXT' : os.environ.get('PATHEXT',''),
                 'SYSTEMROOT' : os.environ.get('SYSTEMROOT',''),
                 'LLVM_DISABLE_CRT_DEBUG' : '1',
+                'PRINTF_EXPONENT_DIGITS' : '2',
                 }
 
             config = TestingConfig(parent,