diff --git a/src/bot/file_preview/mod.rs b/src/bot/file_preview/mod.rs
index 679536a..0bead77 100644
--- a/src/bot/file_preview/mod.rs
+++ b/src/bot/file_preview/mod.rs
@@ -21,7 +21,7 @@ mod gist;
 mod github_repositoriy_file;
 
 static GITHUB_REPOSITORY_FILE_URL_REGEX: Lazy<Regex> = Lazy::new(|| {
-    Regex::new(r"https://github\.com(?:/[^/\s]+){2}/(?:blob|blame)(?:/[^/\s]+)+#[^/\s]+").unwrap()
+    Regex::new(r"https://github\.com(?:/[^/\s]+){2}/(?:blob|blame)(?:/[^/\s]+)+#(?:[^/\s]*L[^/\s]*)+").unwrap()
 });
 
 static GIST_URL_REGEX: Lazy<Regex> =