diff --git a/lib/cake.js b/lib/cake.js
index 2fbf2d88..9908284d 100755
--- a/lib/cake.js
+++ b/lib/cake.js
@@ -43,7 +43,7 @@
       CoffeeScript.run(fs.readFileSync('Cakefile').toString(), {
         fileName: 'Cakefile'
       });
-      oparse = new optparse.OptionParser(switches);
+      oparse = new (optparse.OptionParser)(switches);
       if (!(args.length)) {
         return printTasks();
       }
diff --git a/lib/command.js b/lib/command.js
index eb67b4d6..2e2b1b0d 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -219,7 +219,7 @@
   };
   parseOptions = function() {
     var o;
-    optionParser = new optparse.OptionParser(SWITCHES, BANNER);
+    optionParser = new (optparse.OptionParser)(SWITCHES, BANNER);
     o = (opts = optionParser.parse(process.argv.slice(2, process.argv.length)));
     o.compile || (o.compile = (!!o.output));
     o.run = !(o.compile || o.print || o.lint);
diff --git a/lib/grammar.js b/lib/grammar.js
index b58e536e..415b7618 100644
--- a/lib/grammar.js
+++ b/lib/grammar.js
@@ -398,9 +398,9 @@
     ],
     Loop: [
       o("LOOP Block", function() {
-        return new WhileNode(new LiteralNode('true')).addBody($2);
+        return (new WhileNode(new LiteralNode('true'))).addBody($2);
       }), o("LOOP Expression", function() {
-        return new WhileNode(new LiteralNode('true')).addBody(Expressions.wrap([$2]));
+        return (new WhileNode(new LiteralNode('true'))).addBody(Expressions.wrap([$2]));
       })
     ],
     For: [
diff --git a/lib/nodes.js b/lib/nodes.js
index 793118b5..ed5579a9 100644
--- a/lib/nodes.js
+++ b/lib/nodes.js
@@ -481,7 +481,7 @@
       })());
     };
     CallNode.prototype.compileNode = function(o) {
-      var _b, _c, _d, _e, _f, _g, _h, arg, args, compilation;
+      var _b, _c, _d, _e, _f, _g, _h, arg, args, compilation, value;
       if (!(o.chainRoot)) {
         o.chainRoot = this;
       }
@@ -504,7 +504,17 @@
           }
           return _e;
         }).call(this);
-        compilation = this.isSuper ? this.compileSuper(args.join(', '), o) : ("" + (this.prefix()) + (this.variable.compile(o)) + "(" + (args.join(', ')) + ")");
+        compilation = (function() {
+          if (this.isSuper) {
+            return this.compileSuper(args.join(', '), o);
+          } else {
+            value = this.variable.compile(o);
+            if (this.isNew && this.variable instanceof ValueNode && this.variable.hasProperties()) {
+              value = ("(" + (value) + ")");
+            }
+            return "" + (this.prefix()) + (value) + "(" + (args.join(', ')) + ")";
+          }
+        }).call(this);
       }
       return compilation;
     };
@@ -876,7 +886,7 @@
       })) + ';';
       props = !props.empty() ? '\n' + props.compile(o) : '';
       extension = extension ? '\n' + this.idt() + extension.compile(o) + ';' : '';
-      returns = this.returns ? '\n' + new ReturnNode(this.variable).compile(o) : '';
+      returns = this.returns ? '\n' + (new ReturnNode(this.variable)).compile(o) : '';
       return construct + extension + props + returns;
     };
     return ClassNode;
@@ -980,7 +990,7 @@
           }
           val = new ValueNode(literal(valVar), [new accessClass(idx)]);
         }
-        assigns.push(new AssignNode(obj, val).compile(o));
+        assigns.push((new AssignNode(obj, val)).compile(o));
       }
       code = assigns.join("\n");
       return code;
@@ -1244,7 +1254,7 @@
         this.body = Expressions.wrap([new IfNode(this.guard, this.body)]);
       }
       if (this.returns) {
-        post = '\n' + new ReturnNode(literal(rvar)).compile(merge(o, {
+        post = '\n' + (new ReturnNode(literal(rvar))).compile(merge(o, {
           indent: this.idt()
         }));
       } else {
@@ -1581,7 +1591,7 @@
     };
     ForNode.prototype.compileReturnValue = function(val, o) {
       if (this.returns) {
-        return '\n' + new ReturnNode(literal(val)).compile(o);
+        return '\n' + (new ReturnNode(literal(val))).compile(o);
       }
       if (val) {
         return '\n' + val;
@@ -1630,7 +1640,7 @@
         svar = scope.freeVariable();
         sourcePart = ("" + (svar) + " = " + (this.source.compile(o)) + ";");
         if (this.pattern) {
-          namePart = new AssignNode(this.name, literal("" + (svar) + "[" + (ivar) + "]")).compile(merge(o, {
+          namePart = (new AssignNode(this.name, literal("" + (svar) + "[" + (ivar) + "]"))).compile(merge(o, {
             indent: this.idt(1),
             top: true
           })) + '\n';
diff --git a/src/grammar.coffee b/src/grammar.coffee
index eb33dc9e..fe4a7a94 100644
--- a/src/grammar.coffee
+++ b/src/grammar.coffee
@@ -429,8 +429,8 @@ grammar =
   ]
 
   Loop: [
-    o "LOOP Block",                             -> new WhileNode(new LiteralNode 'true').addBody $2
-    o "LOOP Expression",                        -> new WhileNode(new LiteralNode 'true').addBody Expressions.wrap [$2]
+    o "LOOP Block",                             -> (new WhileNode(new LiteralNode 'true')).addBody $2
+    o "LOOP Expression",                        -> (new WhileNode(new LiteralNode 'true')).addBody Expressions.wrap [$2]
   ]
 
   # Array, object, and range comprehensions, at the most generic level.
diff --git a/src/nodes.coffee b/src/nodes.coffee
index 00f3fb70..0f8bedc7 100644
--- a/src/nodes.coffee
+++ b/src/nodes.coffee
@@ -449,7 +449,9 @@ exports.CallNode = class CallNode extends BaseNode
       compilation = if @isSuper
         @compileSuper(args.join(', '), o)
       else
-        "#{@prefix()}#{@variable.compile(o)}(#{ args.join(', ') })"
+        value = @variable.compile o
+        value = "(#{value})" if @isNew and @variable instanceof ValueNode and @variable.hasProperties()
+        "#{@prefix()}#{value}(#{ args.join(', ') })"
     compilation
 
   # `super()` is converted into a call against the superclass's implementation
@@ -760,7 +762,7 @@ exports.ClassNode = class ClassNode extends BaseNode
     construct = @idt() + (new AssignNode(@variable, constructor)).compile(merge o, {sharedScope: constScope}) + ';'
     props     = if !props.empty() then '\n' + props.compile(o)                     else ''
     extension = if extension      then '\n' + @idt() + extension.compile(o) + ';'  else ''
-    returns   = if @returns       then '\n' + new ReturnNode(@variable).compile(o) else ''
+    returns   = if @returns       then '\n' + (new ReturnNode(@variable)).compile(o) else ''
     construct + extension + props + returns
 
 #### AssignNode
@@ -850,7 +852,7 @@ exports.AssignNode = class AssignNode extends BaseNode
       else
         idx = literal(if splat then "#{valVar}.length - #{olength - idx}" else idx) if typeof idx isnt 'object'
         val = new ValueNode(literal(valVar), [new accessClass(idx)])
-      assigns.push(new AssignNode(obj, val).compile(o))
+      assigns.push((new AssignNode(obj, val)).compile(o))
     code = assigns.join("\n")
     code
 
@@ -1068,7 +1070,7 @@ exports.WhileNode = class WhileNode extends BaseNode
     pre     = "#{set}#{@tab}while (#{cond})"
     @body   = Expressions.wrap([new IfNode(@guard, @body)]) if @guard
     if @returns
-      post = '\n' + new ReturnNode(literal(rvar)).compile(merge(o, indent: @idt()))
+      post = '\n' + (new ReturnNode(literal(rvar))).compile merge o, indent: @idt()
     else
       post = ''
     "#{pre} {\n#{ @body.compile(o) }\n#{@tab}}#{post}"
@@ -1342,7 +1344,7 @@ exports.ForNode = class ForNode extends BaseNode
     this
 
   compileReturnValue: (val, o) ->
-    return '\n' + new ReturnNode(literal(val)).compile(o) if @returns
+    return '\n' + (new ReturnNode(literal(val))).compile(o) if @returns
     return '\n' + val if val
     ''
 
@@ -1372,7 +1374,7 @@ exports.ForNode = class ForNode extends BaseNode
       svar        = scope.freeVariable()
       sourcePart  = "#{svar} = #{ @source.compile(o) };"
       if @pattern
-        namePart  = new AssignNode(@name, literal("#{svar}[#{ivar}]")).compile(merge o, {indent: @idt(1), top: true}) + '\n'
+        namePart  = (new AssignNode(@name, literal("#{svar}[#{ivar}]"))).compile(merge o, {indent: @idt(1), top: true}) + '\n'
       else
         namePart  = "#{name} = #{svar}[#{ivar}]" if name
       unless @object
diff --git a/test/test_classes.coffee b/test/test_classes.coffee
index ab9d7e58..1dae1ac7 100644
--- a/test/test_classes.coffee
+++ b/test/test_classes.coffee
@@ -234,4 +234,31 @@ obj =
     method: -> 'value'
 
 instance = new obj.klass
-ok instance.method() is 'value'
\ No newline at end of file
+ok instance.method() is 'value'
+
+
+# Ensure that nested classes are safely wrapped in parentheses when instantiated
+# to avoid JS problems with operator precedence:
+class1 = ->
+  @name = 'class1'
+  this
+
+class1.class2 = ->
+  @name = 'class2'
+  this
+
+factory = (arg) ->
+  return { class2: class1.class2 }
+
+obj1   = new class1
+obj2_1 = new class1.class2
+obj2_2 = new factory('dummy').class2
+obj2_3 = new (factory('dummy')).class2
+obj2_4 = new (factory('dummy').class2)
+
+ok obj1.name      is 'class1'
+ok obj2_1.name    is 'class2'
+ok obj2_2.name    is 'class2'
+ok obj2_3.name    is 'class2'
+ok obj2_4.name    is 'class2'
+ok obj2_2.class2  is undefined