diff --git a/babylon-to-espree/convertComments.js b/babylon-to-espree/convertComments.js
new file mode 100644
index 00000000..11c2a335
--- /dev/null
+++ b/babylon-to-espree/convertComments.js
@@ -0,0 +1,15 @@
+module.exports = function (comments) {
+  for (var i = 0; i < comments.length; i++) {
+    var comment = comments[i];
+    if (comment.type === "CommentBlock") {
+      comment.type = "Block";
+    } else if (comment.type === "CommentLine") {
+      comment.type = "Line";
+    }
+    // sometimes comments don't get ranges computed,
+    // even with options.ranges === true
+    if (!comment.range) {
+      comment.range = [comment.start, comment.end];
+    }
+  }
+};
diff --git a/babylon-to-espree/index.js b/babylon-to-espree/index.js
index 401570b6..4dd83f08 100644
--- a/babylon-to-espree/index.js
+++ b/babylon-to-espree/index.js
@@ -3,18 +3,4 @@ exports.attachComments = require("./attachComments");
 exports.toTokens       = require("./toTokens");
 exports.toAST          = require("./toAST");
 
-exports.convertComments = function (comments) {
-  for (var i = 0; i < comments.length; i++) {
-    var comment = comments[i];
-    if (comment.type === "CommentBlock") {
-      comment.type = "Block";
-    } else if (comment.type === "CommentLine") {
-      comment.type = "Line";
-    }
-    // sometimes comments don't get ranges computed,
-    // even with options.ranges === true
-    if (!comment.range) {
-      comment.range = [comment.start, comment.end];
-    }
-  }
-};
+exports.convertComments = require("./convertComments");
diff --git a/babylon-to-espree/toAST.js b/babylon-to-espree/toAST.js
index ba1e8d74..ecdb9366 100644
--- a/babylon-to-espree/toAST.js
+++ b/babylon-to-espree/toAST.js
@@ -1,3 +1,5 @@
+var convertComments = require("./convertComments");
+
 module.exports = function (ast, traverse, code) {
   var state = { source: code };
   ast.range = [ast.start, ast.end];
@@ -15,18 +17,6 @@ function changeToLiteral(node, state) {
   }
 }
 
-function changeComments(nodeComments) {
-  for (var i = 0; i < nodeComments.length; i++) {
-    var comment = nodeComments[i];
-    if (comment.type === "CommentLine") {
-      comment.type = "Line";
-    } else if (comment.type === "CommentBlock") {
-      comment.type = "Block";
-    }
-    comment.range = [comment.start, comment.end];
-  }
-}
-
 var astTransformVisitor = {
   noScope: true,
   enter (path) {
@@ -43,11 +33,11 @@ var astTransformVisitor = {
     }
 
     if (node.trailingComments) {
-      changeComments(node.trailingComments);
+      convertComments(node.trailingComments);
     }
 
     if (node.leadingComments) {
-      changeComments(node.leadingComments);
+      convertComments(node.leadingComments);
     }
 
     // make '_paths' non-enumerable (babel-eslint #200)