diff --git a/docs/GlobalISel/IRTranslator.rst b/docs/GlobalISel/IRTranslator.rst
index 1d68524d001..a4d9bdad201 100644
--- a/docs/GlobalISel/IRTranslator.rst
+++ b/docs/GlobalISel/IRTranslator.rst
@@ -16,7 +16,7 @@ occasionally get a bit more involved. For example:
 
 becomes:
 
-.. code-block:: mir
+.. code-block:: none
 
   %2:_(s32) = G_ADD %0:_(s32), %1:_(s32)