diff --git a/lib/compile.js b/lib/compile.js
index b837f32..48c8f64 100644
--- a/lib/compile.js
+++ b/lib/compile.js
@@ -378,8 +378,8 @@ function wrapSFXOutputs(loader, tree, outputs, entryPoints, compileOpts, cache)
   });
 
   var externalDepIds = externalDeps.map(function(dep) {
-    if (compileOpts.format == 'global' || compileOpts.format == 'umd' && (compileOpts.globalName ||
-     Object.keys(compileOpts.globalDeps).length > 0)) {
+    if (compileOpts.format == 'global' || 
+        compileOpts.format == 'umd' && (compileOpts.globalName || Object.keys(compileOpts.globalDeps).length > 0)) {
       var alias = getAlias(loader, dep);
       var globalDep = compileOpts.globalDeps[dep] || compileOpts.globalDeps[alias];
       if (!globalDep)
@@ -400,10 +400,6 @@ function wrapSFXOutputs(loader, tree, outputs, entryPoints, compileOpts, cache)
       return dep;
   });
 
-  if (compileOpts.globalName && globalDeps.length != externalDeps.length) {
-    throw new Error('not enough globalDeps');
-  }
-
   // next wrap with the core code
   return asp(fs.readFile)(path.resolve(__dirname, (allRegister ? '../templates/sfx-core-register.min.js' : '../templates/sfx-core.min.js')))
   .then(function(sfxcore) {
diff --git a/lib/utils.js b/lib/utils.js
index 8be9b30..bb664f0 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -72,20 +72,31 @@ function getAlias(loader, canonicalName) {
   if (canonicalName.match(/\#[\:\{\?]/))
     throw new Error('Unable to alias the conditional dependency "' + canonicalName + '".');
 
-  var bestAlias;
+  var bestAliasLength = 0;
+  var bestAliasSubpath;
+  Object.keys(loader.map).forEach(function(alias) {
+    if (alias.split('/').length <= bestAliasLength)
+      return;
 
-  function getBestAlias(mapped) {
-    return canonicalName.substr(0, mapped.length) == mapped &&
-        (canonicalName.length == mapped.length || canonicalName[mapped.length] == '/');
-  }
+    // get mapped without defaultJSExtension
+    var mapped = normalizePath(loader, loader.map[alias], true);
 
-  Object.keys(loader.map).forEach(function(alias) {
-    if (getBestAlias(loader.map[alias]))
+    // do matching with defaultJSExtension checking
+    if (loader.defaultJSExtensions && canonicalName == mapped + '.js') {
       bestAlias = alias;
+      bestAliasSubpath = '';
+      bestAliasLength = alias.split('/').length;
+    }
+    else if (canonicalName.substr(0, mapped.length) == mapped && 
+        (canonicalName.length == mapped.length || canonicalName[mapped.length] == '/')) {
+      bestAlias = alias;
+      bestAliasSubpath = canonicalName.substr(alias.length);
+      bestAliasLength = alias.split('/').length;
+    }
   });
 
   if (bestAlias)
-    return bestAlias + canonicalName.substr(loader.map[bestAlias].length);
+    return bestAlias + bestAliasSubpath;
 
   return canonicalName;
 }
@@ -161,7 +172,7 @@ function getCanonicalNamePlain(loader, normalized, isPlugin) {
     if (loader.paths[p].indexOf('*') != -1)
       continue;
 
-    var curPath = normalizePath(loader, p, isPlugin);
+    var curPath = normalizePath(loader, loader.paths[p], isPlugin);
 
     // always stop on first exact match
     if (normalized === curPath)
@@ -181,7 +192,7 @@ function getCanonicalNamePlain(loader, normalized, isPlugin) {
         continue;
 
       // normalize the output path
-      var curPath = normalizePath(loader, p, true);
+      var curPath = normalizePath(loader, loader.paths[p], true);
 
       // do reverse match
       var wIndex = curPath.indexOf('*');
@@ -297,10 +308,10 @@ function getPackage(packages, name) {
 var absURLRegEx = /^[^\/]+:\/\//;
 function normalizePath(loader, path, skipExtension) {
   var curPath;
-  if (loader.paths[path][0] == '.')
-    curPath = decodeURI(url.resolve(toFileURL(process.cwd()) + '/', loader.paths[path]));
+  if (path[0] == '.')
+    curPath = decodeURI(url.resolve(toFileURL(process.cwd()) + '/', path));
   else
-    curPath = decodeURI(url.resolve(loader.baseURL, loader.paths[path]));
+    curPath = decodeURI(url.resolve(loader.baseURL, path));
   if (loader.defaultJSExtensions && !skipExtension && curPath.substr(curPath.length - 3, 3) != '.js')
     curPath += '.js';
   return curPath;