diff --git a/dyesub-tool/src/main.rs b/dyesub-tool/src/main.rs
index 33139d2..0c0d63f 100644
--- a/dyesub-tool/src/main.rs
+++ b/dyesub-tool/src/main.rs
@@ -31,21 +31,22 @@ enum Error {
 fn positions<'a>(
     keys: &'a Vec<Key>,
     size: SVGMeasure,
+    margin: SVGMeasure,
     padding: SVGMeasure,
     dimensions: &DocumentDimensions,
 ) -> Vec<(&'a Key<'a>, (SVGMeasure, SVGMeasure))> {
     let grid = size + padding;
-    let mut x = padding;
-    let mut y = padding;
+    let mut x = margin;
+    let mut y = margin;
     let mut positions = Vec::with_capacity(keys.len());
     for key in keys {
         if let Key::Break = key {
-            x = padding;
+            x = margin;
             y = y + grid;
             continue;
         }
-        if x + grid > dimensions.width {
-            x = padding;
+        if x + grid > dimensions.width - margin {
+            x = margin;
             y = y + grid;
         }
         positions.push((key, (x, y)));
@@ -66,8 +67,9 @@ fn main() -> Result<(), Error> {
     };
     let box_size = SVGMeasure::new(14.0, SVGUnit::Millimeter);
     let padding = SVGMeasure::new(2.5, SVGUnit::Millimeter);
+    let margin = SVGMeasure::new(0.25, SVGUnit::Inch);
     let document = DocumentTemplate {
-        positions: positions(&KEYS, box_size, padding, &dimensions),
+        positions: positions(&KEYS, box_size, margin, padding, &dimensions),
         dimensions: &dimensions,
         box_size,
     };