diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index dbdd71ed363..cc1b37aef5d 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -951,17 +951,6 @@ module ts {
         isEmitBlocked(sourceFile?: SourceFile): boolean;
     }
 
-    export interface EmitHost extends ScriptReferenceHost {
-        getSourceFiles(): SourceFile[];
-        isEmitBlocked(sourceFile?: SourceFile): boolean;
-
-        getCommonSourceDirectory(): string;
-        getCanonicalFileName(fileName: string): string;
-        getNewLine(): string;
-
-        writeFile(filename: string, data: string, writeByteOrderMark: boolean, onError?: (message: string) => void): void;
-    }
-
     export interface SourceMapSpan {
         emittedLine: number;    // Line number in the .js file
         emittedColumn: number;  // Column number in the .js file
diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
index edd8bf156cf..9686622decb 100644
--- a/src/compiler/utilities.ts
+++ b/src/compiler/utilities.ts
@@ -23,6 +23,17 @@ module ts {
         string(): string;
     }
 
+    export interface EmitHost extends ScriptReferenceHost {
+        getSourceFiles(): SourceFile[];
+        isEmitBlocked(sourceFile?: SourceFile): boolean;
+
+        getCommonSourceDirectory(): string;
+        getCanonicalFileName(fileName: string): string;
+        getNewLine(): string;
+
+        writeFile(filename: string, data: string, writeByteOrderMark: boolean, onError?: (message: string) => void): void;
+    }
+
     // Pool writers to avoid needing to allocate them for every symbol we write.
     var stringWriters: StringSymbolWriter[] = [];
     export function getSingleLineStringWriter(): StringSymbolWriter {