diff --git a/src/main.rs b/src/main.rs
index 2daf96cf9f..8206a3371f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -591,8 +591,9 @@ fn elf_entry(data: &[u8]) -> (u64, bool) {
 // ASCII wordmark (figlet "banner" — bold solid blocks, which read far better in
 // a low-res boot font than thin line-art). Pure ASCII so it renders identically
 // on the UEFI Unicode console and the VGA CP437 text console (which truncates
-// each char to a byte). Keep this ASCII-only. center_in() normalizes each line
-// to WORDMARK_W, so exact trailing spaces here do not matter.
+// each char to a byte). Keep this ASCII-only. Rows may differ in length; the
+// header centers the block by its widest row and uses no side borders, so the
+// ragged right edge of the letters is never framed.
 const WORDMARK: &[&str] = &[
     "######                ######                          #######  #####",
     "#     # ###### #####  #     # ######   ##   #####     #     # #     #",
@@ -602,7 +603,6 @@ const WORDMARK: &[&str] = &[
     "#    #  #      #    # #     # #      #    # #   #     #     # #     #",
     "#     # ###### #####  ######  ###### #    # #    #    #######  #####",
 ];
-const WORDMARK_W: usize = 69;
 
 /// Return `text` centered within `width` columns, padded with spaces on both
 /// sides to exactly `width` characters (truncated if it does not fit).
@@ -657,20 +657,20 @@ fn draw_header(os: &impl Os) {
     os.set_text_position(0, 0);
     println!();
 
+    // Width of the widest wordmark row; the whole block is centered by this and
+    // bracketed by two even horizontal rules of the same width. No side borders,
+    // so the letters' naturally ragged right edge is never framed (which read as
+    // a crooked border).
+    let wm_w = WORDMARK.iter().map(|l| l.chars().count()).max().unwrap_or(0);
     os.set_text_color(TextColor::Red);
-    if w >= WORDMARK_W + 6 {
-        // A tight box hugging the wordmark, centered on screen. A full-width
-        // frame left the wordmark tiny inside a huge box on wide consoles.
-        let box_inner = WORDMARK_W + 2; // one space of padding each side
-        let margin = " ".repeat((w - (box_inner + 2)) / 2);
-        let border = format!("{}+{}+", margin, "=".repeat(box_inner));
-        println!("{}", border);
+    if wm_w > 0 && w >= wm_w {
+        let margin = " ".repeat((w - wm_w) / 2);
+        let rule = format!("{}{}", margin, "=".repeat(wm_w));
+        println!("{}", rule);
         for line in WORDMARK {
-            // Left-justify (the art is column-0 aligned); centering each line
-            // individually would break the letters' vertical alignment.
-            println!("{}| {:<w$} |", margin, line, w = WORDMARK_W);
+            println!("{}{}", margin, line);
         }
-        println!("{}", border);
+        println!("{}", rule);
     } else {
         // Narrow console: skip the wordmark, just center the name.
         println!("{}", center_in(w, "RedBear OS"));