diff --git a/src/fs_service/io/read.rs b/src/fs_service/io/read.rs
index 575d5b9..45616e2 100644
--- a/src/fs_service/io/read.rs
+++ b/src/fs_service/io/read.rs
@@ -116,7 +116,7 @@ impl FileSystemService {
         let start_pos = if line_count <= n {
             0 // Read from start if fewer than n lines
         } else {
-            *newline_positions.get(line_count - n).unwrap_or(&0) + 1
+            *newline_positions.get(n).unwrap_or(&0) + 1
         };
 
         // Read forward from start_pos
diff --git a/src/tools/tail_file.rs b/src/tools/tail_file.rs
index bc40e55..f5816d7 100644
--- a/src/tools/tail_file.rs
+++ b/src/tools/tail_file.rs
@@ -24,7 +24,7 @@ use crate::fs_service::FileSystemService;
 pub struct TailFile {
     /// The path of the file to get information for.
     pub path: String,
-    /// The number of lines to read from the beginning of the file.
+    /// The number of lines to read from the ending of the file.
     pub lines: u64,
 }