diff --git a/utils/lit/lit.py b/utils/lit/lit.py
index 2c5ecfe1d40..22a8e7b016a 100755
--- a/utils/lit/lit.py
+++ b/utils/lit/lit.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python
+import sys
+
+sys.dont_write_bytecode = True
 
 from lit.main import main
 
diff --git a/utils/llvm-lit/llvm-lit.in b/utils/llvm-lit/llvm-lit.in
index a12056dcc55..22e4f6f57fc 100755
--- a/utils/llvm-lit/llvm-lit.in
+++ b/utils/llvm-lit/llvm-lit.in
@@ -3,6 +3,8 @@
 import os
 import sys
 
+sys.dont_write_bytecode = True
+
 config_map = {}
 
 def map_config(source_dir, site_config):