diff --git a/extras/README.md b/extras/README.md
index 0f9daa9c8..a0a24f8a1 100644
--- a/extras/README.md
+++ b/extras/README.md
@@ -207,7 +207,7 @@ MapEventHeader_0x584c3: ; 0x584c3
 
 #### Helpful ROM investigation tools
 
-```crystal
+```python
 import crystal
 
 # load the bytes