diff --git a/src/components/views/elements/MessageEditor.js b/src/components/views/elements/MessageEditor.js
index 60e07bd951..cf306d80bb 100644
--- a/src/components/views/elements/MessageEditor.js
+++ b/src/components/views/elements/MessageEditor.js
@@ -90,7 +90,7 @@ function createEditContent(model, editedEvent) {
         body: `${plainPrefix} * ${body}`,
     };
 
-    const formattedBody = htmlSerializeIfNeeded(model, /*forceHtml=*/ isReply);
+    const formattedBody = htmlSerializeIfNeeded(model, {forceHTML: isReply});
     if (formattedBody) {
         newContent.format = "org.matrix.custom.html";
         newContent.formatted_body = htmlPrefix + formattedBody;
diff --git a/src/editor/serialize.js b/src/editor/serialize.js
index 9790597b13..37565b64a0 100644
--- a/src/editor/serialize.js
+++ b/src/editor/serialize.js
@@ -33,10 +33,10 @@ export function mdSerialize(model) {
     }, "");
 }
 
-export function htmlSerializeIfNeeded(model, forceHtml = false) {
+export function htmlSerializeIfNeeded(model, {forceHTML = false}) {
     const md = mdSerialize(model);
     const parser = new Markdown(md);
-    if (!parser.isPlainText() || forceHtml) {
+    if (!parser.isPlainText() || forceHTML) {
         return parser.toHTML();
     }
 }