diff --git a/quartz/components/Head.tsx b/quartz/components/Head.tsx
index 7b9815c..90e3387 100644
--- a/quartz/components/Head.tsx
+++ b/quartz/components/Head.tsx
@@ -6,8 +6,9 @@ import { QuartzComponent, QuartzComponentConstructor, QuartzComponentProps } fro
 
 export default (() => {
   const Head: QuartzComponent = ({ cfg, fileData, externalResources }: QuartzComponentProps) => {
+    const titleSuffix = cfg.pageTitleSuffix ?? ""
     const title =
-      (fileData.frontmatter?.title ?? i18n(cfg.locale).propertyDefaults.title) + cfg.pageTitleSuffix
+      (fileData.frontmatter?.title ?? i18n(cfg.locale).propertyDefaults.title) + titleSuffix
     const description =
       fileData.description?.trim() ?? i18n(cfg.locale).propertyDefaults.description
     const { css, js } = externalResources