diff --git a/src/cp437.rs b/src/cp437.rs
index 1b57ad0..de645bd 100644
--- a/src/cp437.rs
+++ b/src/cp437.rs
@@ -268,7 +268,7 @@ fn debug_print_glyph(glyph: [u8; 14]) {
         let bits = line.view_bits::<Lsb0>();
         for pixel in bits.iter() {
             if pixel == false {
-                print!(".");
+                print!("_");
             } else {
                 print!("@");
             }