1 files changed, 2 insertions, 1 deletions
diff --git a/app/assets/javascripts/diffs/store/utils.js b/app/assets/javascripts/diffs/store/utils.js
index 4139a999574..b7e52a8f37f 100644
--- a/app/assets/javascripts/diffs/store/utils.js
+++ b/app/assets/javascripts/diffs/store/utils.js
@@ -205,7 +205,8 @@ export function prepareDiffData(diffData) {
     if (file.highlightedDiffLines) {
       const linesLength = file.highlightedDiffLines.length;
       for (let u = 0; u < linesLength; u += 1) {
-        trimFirstCharOfLineContent(file.highlightedDiffLines[u]);
+        const line = file.highlightedDiffLines[u];
+        Object.assign(line, { ...trimFirstCharOfLineContent(line) });
       }
       showingLines += file.parallelDiffLines.length;
     }