diff --git a/airportdisplay/src/display.rs b/airportdisplay/src/display.rs
index 6228ff2..59792b2 100644
--- a/airportdisplay/src/display.rs
+++ b/airportdisplay/src/display.rs
@@ -13,7 +13,7 @@ impl Display {
     /// Open a new UDP socket and create a display instance
     pub fn open(addr: String) -> Result<Self> {
         let socket = UdpSocket::bind("0.0.0.0:0")?;
-        Ok(Self{
+        Ok(Self {
             addr: addr,
             socket: socket,
         })
@@ -23,10 +23,9 @@ impl Display {
     pub fn send(&self, cmd: Command) -> Result<()> {
         let data: Data = cmd.into();
         for frame in data {
-            self.socket.send_to(
-                frame.as_slice(), self.addr.clone().as_str())?;
+            self.socket
+                .send_to(frame.as_slice(), self.addr.clone().as_str())?;
         }
         Ok(())
     }
 }
-
diff --git a/airportdisplay/src/geometry.rs b/airportdisplay/src/geometry.rs
index e05c7fd..02f6132 100644
--- a/airportdisplay/src/geometry.rs
+++ b/airportdisplay/src/geometry.rs
@@ -1,4 +1,3 @@
-
 /// An origin marks the top left position of the
 /// data sent to the display.
 #[derive(Default)]
@@ -7,7 +6,7 @@ pub struct Origin(pub u16, pub u16);
 /// Size defines the width and height of a window
 pub struct Size(pub u16, pub u16);
 
-/// A window 
+/// A window
 pub struct Window(pub Origin, pub Size);
 
 impl Window {
@@ -15,4 +14,3 @@ impl Window {
         Window(Origin(x, y), Size(w, h))
     }
 }
-
diff --git a/airportdisplay/src/lib.rs b/airportdisplay/src/lib.rs
index 1cbc069..dba68b2 100644
--- a/airportdisplay/src/lib.rs
+++ b/airportdisplay/src/lib.rs
@@ -1,12 +1,12 @@
-mod display;
-mod protocol;
 mod commands;
+mod display;
 mod geometry;
+mod protocol;
 mod text;
 
 pub const TEXT_COLUMNS: usize = 56;
 pub const TEXT_ROWS: usize = 20;
 
-pub use commands::{Command};
-pub use protocol::Data;
+pub use commands::Command;
 pub use display::Display;
+pub use protocol::Data;
diff --git a/airportdisplay/src/protocol.rs b/airportdisplay/src/protocol.rs
index 720ce28..dc1d15e 100644
--- a/airportdisplay/src/protocol.rs
+++ b/airportdisplay/src/protocol.rs
@@ -1,12 +1,11 @@
 use std::convert::From;
 
-use codepage_437::{CP437_WINGDINGS, ToCp437};
+use codepage_437::{ToCp437, CP437_WINGDINGS};
 
 use super::{
-    commands::{Command},
-    text,
-    geometry::{Window, Origin, Size},
-    TEXT_COLUMNS, TEXT_ROWS,
+    commands::Command,
+    geometry::{Origin, Size, Window},
+    text, TEXT_COLUMNS, TEXT_ROWS,
 };
 
 const CMD_RAW_TEXT: &'static [u8] = &[0x00, 0x03];
@@ -21,20 +20,14 @@ pub type Data = Vec<Frame>;
 /// Encode position data as big endian
 impl From<Origin> for Frame {
     fn from(Origin(x, y): Origin) -> Self {
-        vec![
-            (x >> 8) as u8, x as u8,
-            (y >> 8) as u8, y as u8,
-        ]
+        vec![(x >> 8) as u8, x as u8, (y >> 8) as u8, y as u8]
     }
 }
 
 /// Encode size as big endian
 impl From<Size> for Frame {
     fn from(Size(w, h): Size) -> Self {
-        vec![
-            (w >> 8) as u8, w as u8,
-            (h >> 8) as u8, h as u8,
-        ]
+        vec![(w >> 8) as u8, w as u8, (h >> 8) as u8, h as u8]
     }
 }
 
@@ -62,23 +55,31 @@ impl From<text::Buffer> for Data {
         lines.truncate(TEXT_ROWS);
 
         let mut data = vec![];
-        for (i, line) in lines.iter().enumerate() {    
+        for (i, line) in lines.iter().enumerate() {
+            // Convert utf8 to codepage 437
             if let Ok(bytes) = line.to_cp437(&CP437_WINGDINGS) {
+                let mut bytes: Frame = bytes.into();
+                bytes.truncate(TEXT_COLUMNS);
+
                 let len = bytes.len() as u16;
                 let pos = Origin(x, y + i as u16);
                 let size = Size(len, 1);
-                data.push([
-                    Frame::from(CMD_RAW_TEXT),
-                    pos.into(),
-                    size.into(),
-                    bytes.into(),
-                ].concat());
+                data.push(
+                    [
+                        Frame::from(CMD_RAW_TEXT),
+                        pos.into(),
+                        size.into(),
+                        bytes.into(),
+                    ]
+                    .concat(),
+                );
             }
         }
         data
     }
 }
 
+/// Encode text command
 impl From<text::Text> for Data {
     fn from(text: text::Text) -> Data {
         match text {
diff --git a/airportdisplay/src/text.rs b/airportdisplay/src/text.rs
index 1291576..cafb468 100644
--- a/airportdisplay/src/text.rs
+++ b/airportdisplay/src/text.rs
@@ -1,9 +1,7 @@
-
 use std::convert::From;
 
 use super::geometry::Origin;
 
-
 /// TextRaw holds bytes and a window
 pub struct Raw(pub Origin, pub Vec<u8>);
 
@@ -14,14 +12,13 @@ impl From<Vec<u8>> for Raw {
     }
 }
 
-
 /// TextBuffer holds a multiline block of utf8 text
 /// data and a origin.
 pub struct Buffer(pub Origin, pub String);
 
 impl Buffer {
     pub fn at(x: u16, y: u16, text: String) -> Self {
-        Self(Origin(x, y), text) 
+        Self(Origin(x, y), text)
     }
 }