diff --git a/src/compiler/factory/emitNode.ts b/src/compiler/factory/emitNode.ts
index ebb7300efdeec..6c207994331a3 100644
--- a/src/compiler/factory/emitNode.ts
+++ b/src/compiler/factory/emitNode.ts
@@ -127,7 +127,7 @@ namespace ts {
     /**
      * Gets a custom text range to use when emitting comments.
      */
-    export function getCommentRange(node: Node) {
+    export function getCommentRange(node: Node): TextRange {
         return node.emitNode?.commentRange ?? node;
     }