diff --git a/static/js/main.js b/static/js/main.js
index e653573..5024198 100644
--- a/static/js/main.js
+++ b/static/js/main.js
@@ -186,7 +186,7 @@ function updateFont() {
     currentFontSize = localStorage.getItem("SETTING-fontsize")
     noteBox.style.fontSize = currentFontSize + "px"
     textSizeBox.innerText = currentFontSize + "px"
-    if markdowntoggle {
+    if (markdowntoggle) {
         var targethtml = "<!DOCTYPE html><html><style>html { height: 100% } body { font-family: 'Inter', sans-serif; height: 100%; color: " + getComputedStyle(document.documentElement).getPropertyValue('--text-color') + "; font-size: " + currentFontSize + "px; }</style>" + marked.parse(noteBox.value) + "</html>";
         markdown.srcdoc = targethtml;
     }
