diff --git a/src/serve_font.js b/src/serve_font.js
index d8ac041e6..f80c4209c 100644
--- a/src/serve_font.js
+++ b/src/serve_font.js
@@ -58,9 +58,9 @@ export async function serve_font(options, allowedFonts, programOpts) {
     const modifiedSince = req.get('if-modified-since');
     const cc = req.get('cache-control');
     if (modifiedSince && (!cc || cc.indexOf('no-cache') === -1)) {
-      const lastDate = new Date(lastModified).getTime();
-      const modDate = new Date(modifiedSince).getTime();
-      if (lastDate === modDate) {
+      if (
+        new Date(lastModified).getTime() === new Date(modifiedSince).getTime()
+      ) {
         return res.sendStatus(304);
       }
     }
diff --git a/src/serve_rendered.js b/src/serve_rendered.js
index ef5cf306e..f54cc4977 100644
--- a/src/serve_rendered.js
+++ b/src/serve_rendered.js
@@ -665,9 +665,10 @@ async function handleTileRequest(
   const modifiedSince = req.get('if-modified-since');
   const cc = req.get('cache-control');
   if (modifiedSince && (!cc || cc.indexOf('no-cache') === -1)) {
-    const lastDate = new Date(item.lastModified).getTime();
-    const modDate = new Date(modifiedSince).getTime();
-    if (lastDate === modDate) {
+    if (
+      new Date(item.lastModified).getTime() ===
+      new Date(modifiedSince).getTime()
+    ) {
       return res.sendStatus(304);
     }
   }
diff --git a/src/serve_style.js b/src/serve_style.js
index b6ff0e236..68c631928 100644
--- a/src/serve_style.js
+++ b/src/serve_style.js
@@ -143,9 +143,10 @@ export const serve_style = {
       const modifiedSince = req.get('if-modified-since');
       const cc = req.get('cache-control');
       if (modifiedSince && (!cc || cc.indexOf('no-cache') === -1)) {
-        const lastDate = new Date(item.lastModified).getTime();
-        const modDate = new Date(modifiedSince).getTime();
-        if (lastDate === modDate) {
+        if (
+          new Date(item.lastModified).getTime() ===
+          new Date(modifiedSince).getTime()
+        ) {
           return res.sendStatus(304);
         }
       }