diff --git a/RStudio-instructions.md b/RStudio-instructions.md
index f1bf575..3fa806c 100644
--- a/RStudio-instructions.md
+++ b/RStudio-instructions.md
@@ -1,7 +1,7 @@
There's no straightforward way to enable font ligatures in RStudio even if it's supposed to support them. Use the following workaround to enable font ligatures:
1. Close RStudio
-2. Open [RStudio dir]/www/index.htm
+2. Open [RStudio dir]/www/index.html
3. Add following code between `` and ``:
```html