diff --git a/contributing-guides/style-guide.md b/contributing-guides/style-guide.md
index 375eb28159..70225c3d74 100644
--- a/contributing-guides/style-guide.md
+++ b/contributing-guides/style-guide.md
@@ -411,7 +411,7 @@ For example, `[d]ownload` in English may be translated into `[d]escargar` in Spa
 
 ### Option syntax
 
-- For commonly/frequently used commands (e.g. `grep`, `tar`, `etc`), we prefer using short options along with [mnemonics](#short-option-mnemonics) or both inside a placeholder.
+- For commonly/frequently used commands (e.g. `grep`, `tar`, etc.), we prefer using short options along with [mnemonics](#short-option-mnemonics) or both inside a placeholder.
 - For letting the client decide whether to show long or short options in commands, use an option placeholder i.e. `{{[-o|--output]}}`.
 - For user-friendliness, use **GNU-style long options** (like `--help` rather than `-h`) when they are cross-platform compatible (intended to work the same across multiple platforms) for pages in the `common` directory.
 - Prefer using a space instead of the equals sign (`=`) to separate options from their arguments (i.e. use `--opt arg` instead of `--opt=arg`), unless the program does not support it.