diff --git a/src/compiler/binder.ts b/src/compiler/binder.ts
index a4bf77b22c1..2100936c775 100644
--- a/src/compiler/binder.ts
+++ b/src/compiler/binder.ts
@@ -601,22 +601,21 @@ module ts {
             }
 
             let symbol = node.symbol;
-            if (symbol.exports) {
-                // TypeScript 1.0 spec (April 2014): 8.4
-                // Every class automatically contains a static property member named 'prototype', 
-                // the type of which is an instantiation of the class type with type Any supplied as a type argument for each type parameter.
-                // It is an error to explicitly declare a static property member with the name 'prototype'.
-                let prototypeSymbol = createSymbol(SymbolFlags.Property | SymbolFlags.Prototype, "prototype");
-                if (hasProperty(symbol.exports, prototypeSymbol.name)) {
-                    if (node.name) {
-                        node.name.parent = node;
-                    }
-                    file.bindDiagnostics.push(createDiagnosticForNode(symbol.exports[prototypeSymbol.name].declarations[0],
-                        Diagnostics.Duplicate_identifier_0, prototypeSymbol.name));
+
+            // TypeScript 1.0 spec (April 2014): 8.4
+            // Every class automatically contains a static property member named 'prototype', 
+            // the type of which is an instantiation of the class type with type Any supplied as a type argument for each type parameter.
+            // It is an error to explicitly declare a static property member with the name 'prototype'.
+            let prototypeSymbol = createSymbol(SymbolFlags.Property | SymbolFlags.Prototype, "prototype");
+            if (hasProperty(symbol.exports, prototypeSymbol.name)) {
+                if (node.name) {
+                    node.name.parent = node;
                 }
-                symbol.exports[prototypeSymbol.name] = prototypeSymbol;
-                prototypeSymbol.parent = symbol;
+                file.bindDiagnostics.push(createDiagnosticForNode(symbol.exports[prototypeSymbol.name].declarations[0],
+                    Diagnostics.Duplicate_identifier_0, prototypeSymbol.name));
             }
+            symbol.exports[prototypeSymbol.name] = prototypeSymbol;
+            prototypeSymbol.parent = symbol;
 
             return SymbolFlags.Class;
         }