diff --git a/lib/loader.js b/lib/loader.js
index cb8ff307..158a209b 100644
--- a/lib/loader.js
+++ b/lib/loader.js
@@ -115,7 +115,13 @@ module.exports = function(content, map) {
 			map = result.map;
 			if(map.sources) {
 				map.sources = map.sources.map(function(source) {
-					return source.split("!").pop().replace(/\\/g, '/');
+					return (query.sourceMapSourcesDomain || '') +
+						source.split("!")
+							.pop()
+							.replace(/\\/g, '/')
+							.replace(/(\w):\//, function(_, id) {
+							    return id.toUpperCase() + ':\/';
+							});
 				}, this);
 				map.sourceRoot = "";
 			}