diff --git a/source/Ox/js/String.js b/source/Ox/js/String.js
index c52e5301..8f28a701 100644
--- a/source/Ox/js/String.js
+++ b/source/Ox/js/String.js
@@ -110,8 +110,8 @@ Ox.pad = function(string, position, length, padding) {
 
 /*@
 Ox.parseDuration <f> Takes a formatted duration, returns seconds
-    > Ox.parseDuration('01:02:03.04')
-    3723.04
+    > Ox.parseDuration('1:02:03:04.05')
+    93784.05
     > Ox.parseDuration('3')
     3
     > Ox.parseDuration('2:')
@@ -120,8 +120,8 @@ Ox.parseDuration <f> Takes a formatted duration, returns seconds
     3600
 @*/
 Ox.parseDuration = function(string) {
-    return string.split(':').reverse().slice(0, 3).reduce(function(p, c, i) {
-        return p + (parseFloat(c) || 0) * Math.pow(60, i);
+    return string.split(':').reverse().slice(0, 4).reduce(function(p, c, i) {
+        return p + (parseFloat(c) || 0) * (i == 3 ? 86400 : Math.pow(60, i));
     }, 0);
 };