diff --git a/run.sh b/run.sh
index eb978ce78..2cad62304 100755
--- a/run.sh
+++ b/run.sh
@@ -1,4 +1,3 @@
 #!/bin/sh
 
-python3 -B contemplate_koans.py
-
+PYTHON_COLORS=0 python3 -B contemplate_koans.py