diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 825570c2eb..5a990d4e9d 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -4474,7 +4474,7 @@ module ts {
             if (symbol.flags & SymbolFlags.Import) {
                 // Mark the import as referenced so that we emit it in the final .js file.
                 // exception: identifiers that appear in type queries, const enums, modules that contain only const enums
-                getSymbolLinks(symbol).referenced = !isInTypeQuery(node) && !isConstEnumOrConstEnumOnlyModule(resolveImport(symbol));
+                getSymbolLinks(symbol).referenced = getSymbolLinks(symbol).referenced || (!isInTypeQuery(node) && !isConstEnumOrConstEnumOnlyModule(resolveImport(symbol)));
             }
 
             checkCollisionWithCapturedSuperVariable(node, node);
diff --git a/tests/baselines/reference/aliasUsageInIndexerOfClass.js b/tests/baselines/reference/aliasUsageInIndexerOfClass.js
index dfbb1982ca..7b2907681e 100644
--- a/tests/baselines/reference/aliasUsageInIndexerOfClass.js
+++ b/tests/baselines/reference/aliasUsageInIndexerOfClass.js
@@ -50,6 +50,7 @@ var VisualizationModel = (function (_super) {
 })(Backbone.Model);
 exports.VisualizationModel = VisualizationModel;
 //// [aliasUsageInIndexerOfClass_main.js]
+var moduleA = require("aliasUsageInIndexerOfClass_moduleA");
 var N = (function () {
     function N() {
         this.x = moduleA;
diff --git a/tests/baselines/reference/elidingImportNames.js b/tests/baselines/reference/elidingImportNames.js
index f14999f241..3c61789a1a 100644
--- a/tests/baselines/reference/elidingImportNames.js
+++ b/tests/baselines/reference/elidingImportNames.js
@@ -20,6 +20,7 @@ exports.main = 10;
 //// [elidingImportNames_main1.js]
 exports.main = 10;
 //// [elidingImportNames_test.js]
+var a = require('elidingImportNames_main'); // alias used in typeof
 var b = a;
 var x;
 var a2 = require('elidingImportNames_main1'); // alias not used in typeof