diff --git a/lib/scope.js b/lib/scope.js
index f8ecedb5..1004f02c 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -415,14 +415,10 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
     var to_mangle = [];
 
     if (options.cache) {
-        this.globals.each(function(symbol){
-            if (options.reserved.indexOf(symbol.name) < 0) {
-                to_mangle.push(symbol);
-            }
-        });
+        push_symbols(this.globals);
     }
 
-    var tw = new TreeWalker(function(node, descend){
+    this.walk(new TreeWalker(function(node, descend) {
         if (node instanceof AST_LabeledStatement) {
             // lname is incremented when we get to the AST_Label
             var save_nesting = lname;
@@ -431,13 +427,7 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
             return true;        // don't descend again in TreeWalker
         }
         if (node instanceof AST_Scope) {
-            var p = tw.parent(), a = [];
-            node.variables.each(function(symbol){
-                if (options.reserved.indexOf(symbol.name) < 0) {
-                    a.push(symbol);
-                }
-            });
-            to_mangle.push.apply(to_mangle, a);
+            push_symbols(node.variables);
             return;
         }
         if (node instanceof AST_Label) {
@@ -450,13 +440,25 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
             to_mangle.push(node.definition());
             return;
         }
-    });
-    this.walk(tw);
+    }));
     to_mangle.forEach(function(def){ def.mangle(options) });
 
     if (options.cache) {
         options.cache.cname = this.cname;
     }
+
+    function push_symbols(dict) {
+        var a = [];
+        dict.each(function(symbol) {
+            if (options.reserved.indexOf(symbol.name) < 0) {
+                a.push(symbol);
+            }
+        });
+        a.sort(function(m, n) {
+            return n.references.length - m.references.length;
+        });
+        to_mangle.push.apply(to_mangle, a);
+    }
 });
 
 AST_Toplevel.DEFMETHOD("compute_char_frequency", function(options){
diff --git a/test/compress/functions.js b/test/compress/functions.js
index f411afa2..dfb9a2e2 100644
--- a/test/compress/functions.js
+++ b/test/compress/functions.js
@@ -265,7 +265,7 @@ issue_203: {
     }
     expect: {
         var m = {};
-        var fn = Function("n,o", "o.exports=42");
+        var fn = Function("o,n", "n.exports=42");
         fn(null, m, m.exports);
         console.log(m.exports);
     }
diff --git a/test/compress/issue-1202.js b/test/compress/issue-1202.js
index 27bc4248..8e707c4e 100644
--- a/test/compress/issue-1202.js
+++ b/test/compress/issue-1202.js
@@ -17,8 +17,8 @@ mangle_keep_fnames_false: {
     expect: {
         "use strict";
         function total() {
-            return function t(n, r, u) {
-                return n + r + u;
+            return function c(t, r, u) {
+                return t + r + u;
             };
         }
     }
diff --git a/test/compress/issue-1446.js b/test/compress/issue-1446.js
index 30062c7d..1bfb8526 100644
--- a/test/compress/issue-1446.js
+++ b/test/compress/issue-1446.js
@@ -71,5 +71,5 @@ undefined_redefined_mangle: {
             return typeof n == "undefined";
         }
     }
-    expect_exact: "function f(n){var r=1;return void 0===r}"
+    expect_exact: "function f(r){var n=1;return void 0===n}"
 }
diff --git a/test/mocha/minify.js b/test/mocha/minify.js
index 88e9c4eb..a479c1a6 100644
--- a/test/mocha/minify.js
+++ b/test/mocha/minify.js
@@ -43,7 +43,7 @@ describe("minify", function() {
             compressed += result.code;
         });
         assert.strictEqual(JSON.stringify(cache).slice(0, 20), '{"cname":5,"props":{');
-        assert.strictEqual(compressed, 'function n(n){return 3*n}function r(n){return n/2}function c(o){l("Foo:",2*o)}var l=console.log.bind(console);var f=n(3),i=r(12);l("qux",f,i),c(11);');
+        assert.strictEqual(compressed, 'function n(n){return 3*n}function r(n){return n/2}function l(o){c("Foo:",2*o)}var c=console.log.bind(console);var f=n(3),i=r(12);c("qux",f,i),l(11);');
         assert.strictEqual(run_code(compressed), run_code(original));
     });
 
@@ -69,7 +69,7 @@ describe("minify", function() {
             compressed += result.code;
         });
         assert.strictEqual(JSON.stringify(cache).slice(0, 28), '{"vars":{"cname":5,"props":{');
-        assert.strictEqual(compressed, 'function n(n){return 3*n}function r(n){return n/2}function c(o){l("Foo:",2*o)}var l=console.log.bind(console);var f=n(3),i=r(12);l("qux",f,i),c(11);');
+        assert.strictEqual(compressed, 'function n(n){return 3*n}function r(n){return n/2}function l(o){c("Foo:",2*o)}var c=console.log.bind(console);var f=n(3),i=r(12);c("qux",f,i),l(11);');
         assert.strictEqual(run_code(compressed), run_code(original));
     });