diff --git a/www/settings.html b/www/settings.html
index 9b0c765..977fcd9 100644
--- a/www/settings.html
+++ b/www/settings.html
@@ -106,7 +106,7 @@
       <small>* Continuously move platform while printing instead of once per layer</small>
       <br>
 	  <label for="useRetraction">Use retraction:</label><input id="useRetraction" type="checkbox" name="printer.retraction.enabled" value="useRetraction"><br>
-      <label for="retractionAmount">Retraction amount:</label><input id="retractionAmount" type="number" class="small" name="printer.retraction.amount">mm<br>
+      <label for="retractionAmount">Retraction amount:</label><input id="retractionAmount" type="number" step="0.5" class="small" name="printer.retraction.amount">mm<br>
       <label for="retractionMinDistance">Retraction min distance:</label><input id="retractionMinDistance" type="number" class="small" name="printer.retraction.minDistance">mm<br>
       <label for="retractionSpeed">Retraction speed:</label><input id="retractionSpeed" type="number" class="small" name="printer.retraction.speed">mm/s<br>
       <br>