diff --git a/src/services/services.ts b/src/services/services.ts
index 06da4859274..7af601c7e30 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -2986,7 +2986,9 @@ module ts {
                             return containingNodeKind === SyntaxKind.CallExpression               // func( |
                                 || containingNodeKind === SyntaxKind.Constructor                  // constructor( |
                                 || containingNodeKind === SyntaxKind.NewExpression                // new C(a|
-                                || containingNodeKind === SyntaxKind.ParenthesizedExpression;     // let x = (a|
+                                || containingNodeKind === SyntaxKind.ParenthesizedExpression      // let x = (a|
+                                || containingNodeKind === SyntaxKind.ParenthesizedType            // function F(pred: (a|
+                                || containingNodeKind === SyntaxKind.Parameter;                   // function F(pred: a|
 
                         case SyntaxKind.OpenBracketToken:
                             return containingNodeKind === SyntaxKind.ArrayLiteralExpression;                 // [ |
diff --git a/tests/cases/fourslash/completionListNewIdentifierFunctionDeclaration.ts b/tests/cases/fourslash/completionListNewIdentifierFunctionDeclaration.ts
new file mode 100644
index 00000000000..3180f8fd820
--- /dev/null
+++ b/tests/cases/fourslash/completionListNewIdentifierFunctionDeclaration.ts
@@ -0,0 +1,12 @@
+/// <reference path='fourslash.ts' />
+
+////function F(pref: (a/*1*/
+////
+////function F(pref: a/*2*/
+////
+
+test.markers().forEach((m) => {
+    goTo.position(m.position, m.fileName);
+    verify.not.completionListIsEmpty();
+    verify.completionListAllowsNewIdentifier();
+});