diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 94cb0728a22..1ec86615949 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -5317,7 +5317,7 @@ module ts {
             if (fullTypeCheck) {
                 checkCollisionWithCapturedSuperVariable(node, node.name);
                 checkCollisionWithCapturedThisVariable(node, node.name);
-                checkCollistionWithRequireExportsInGeneratedCode(node, node.name);
+                checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
                 checkCollisionWithArgumentsInGeneratedCode(node);
                 if (compilerOptions.noImplicitAny && !node.type) {
                     switch (node.kind) {
@@ -6063,7 +6063,7 @@ module ts {
             }
         }
 
-        function checkCollistionWithRequireExportsInGeneratedCode(node: Node, name: Identifier) {
+        function checkCollisionWithRequireExportsInGeneratedCode(node: Node, name: Identifier) {
             if (!needCollisionCheckForIdentifier(node, name, "require") && !needCollisionCheckForIdentifier(node, name, "exports")) {
                 return;
             }
@@ -6108,7 +6108,7 @@ module ts {
 
                 checkCollisionWithCapturedSuperVariable(node, node.name);
                 checkCollisionWithCapturedThisVariable(node, node.name);
-                checkCollistionWithRequireExportsInGeneratedCode(node, node.name);
+                checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
                 if (!useTypeFromValueDeclaration) {
                     // TypeScript 1.0 spec (April 2014): 5.1
                     // Multiple declarations for the same variable name in the same declaration space are permitted,
@@ -6367,7 +6367,7 @@ module ts {
             checkTypeNameIsReserved(node.name, Diagnostics.Class_name_cannot_be_0);
             checkTypeParameters(node.typeParameters);
             checkCollisionWithCapturedThisVariable(node, node.name);
-            checkCollistionWithRequireExportsInGeneratedCode(node, node.name);
+            checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
             checkExportsOnMergedDeclarations(node);
             var symbol = getSymbolOfNode(node);
             var type = <InterfaceType>getDeclaredTypeOfSymbol(symbol);
@@ -6618,7 +6618,7 @@ module ts {
 
             checkTypeNameIsReserved(node.name, Diagnostics.Enum_name_cannot_be_0);
             checkCollisionWithCapturedThisVariable(node, node.name);
-            checkCollistionWithRequireExportsInGeneratedCode(node, node.name);
+            checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
             checkExportsOnMergedDeclarations(node);
 
             computeEnumMemberValues(node);
@@ -6671,7 +6671,7 @@ module ts {
         function checkModuleDeclaration(node: ModuleDeclaration) {
             if (fullTypeCheck) {
                 checkCollisionWithCapturedThisVariable(node, node.name);
-                checkCollistionWithRequireExportsInGeneratedCode(node, node.name);
+                checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
                 checkExportsOnMergedDeclarations(node);
                 var symbol = getSymbolOfNode(node);
                 if (symbol.flags & SymbolFlags.ValueModule && symbol.declarations.length > 1 && !isInAmbientContext(node)) {
@@ -6706,7 +6706,7 @@ module ts {
 
         function checkImportDeclaration(node: ImportDeclaration) {
             checkCollisionWithCapturedThisVariable(node, node.name);
-            checkCollistionWithRequireExportsInGeneratedCode(node, node.name);
+            checkCollisionWithRequireExportsInGeneratedCode(node, node.name);
             var symbol = getSymbolOfNode(node);
             var target: Symbol;