diff --git a/src/static/js/Changeset.js b/src/static/js/Changeset.js
index bdf25f7de..220a3947b 100644
--- a/src/static/js/Changeset.js
+++ b/src/static/js/Changeset.js
@@ -654,15 +654,6 @@ const textLinesMutator = (lines) => {
   // invariant: if (inSplice && (curLine >= curSplice[0] + curSplice.length - 2)) then
   //            curCol == 0
 
-  /**
-   * Adds and/or removes entries at a specific offset in `lines`. Called when leaving the splice.
-   *
-   * @param {[number, number?, ...string[]?]} s - curSplice
-   */
-  const linesApplySplice = (s) => {
-    lines.splice(...s);
-  };
-
   /**
    * Get a line from `lines` at given index.
    *
@@ -724,7 +715,7 @@ const textLinesMutator = (lines) => {
    * close or TODO(doc).
    */
   const leaveSplice = () => {
-    linesApplySplice(curSplice);
+    lines.splice(...curSplice);
     curSplice.length = 2;
     curSplice[0] = curSplice[1] = 0;
     inSplice = false;