diff --git a/gatsby-config.js b/gatsby-config.js
index 6dee206d38..51268fd9e5 100644
--- a/gatsby-config.js
+++ b/gatsby-config.js
@@ -260,17 +260,17 @@ module.exports = {
       resolve: "gatsby-plugin-netlify", // make sure to put last in the array
       options: {
         headers: {
-          "/*.html": ["cache-control: public, max-age=0, must-revalidate"],
-          "/*.json": ["cache-control: public, max-age=0, must-revalidate"],
-          "/page-data/*": ["cache-control: public, max-age=0, must-revalidate"],
-          "/static/*": ["cache-control: public, max-age=31536000, immutable"],
-          "/assets/*": ["cache-control: public, max-age=31536000, immutable"],
-          "/favicons/*": ["cache-control: public, max-age=31536000, immutable"],
-          "/icons/*": ["cache-control: public, max-age=31536000, immutable"],
-          "/fonts/*": ["cache-control: public, max-age=31536000, immutable"],
-          "/sw.js": ["cache-control: public, max-age=0, must-revalidate"],
-          "/**/*.js": ["cache-control: public, max-age=31536000, immutable"],
-          "/**/*.css": ["cache-control: public, max-age=31536000, immutable"],
+          "/*.html": ["Cache-Control: public, max-age=0, must-revalidate"],
+          "/*.json": ["Cache-Control: public, max-age=0, must-revalidate"],
+          "/page-data/*": ["Cache-Control: public, max-age=0, must-revalidate"],
+          "/static/*": ["Cache-Control: public, max-age=31536000, immutable"],
+          "/assets/*": ["Cache-Control: public, max-age=31536000, immutable"],
+          "/favicons/*": ["Cache-Control: public, max-age=31536000, immutable"],
+          "/icons/*": ["Cache-Control: public, max-age=31536000, immutable"],
+          "/fonts/*": ["Cache-Control: public, max-age=31536000, immutable"],
+          "/sw.js": ["Cache-Control: public, max-age=0, must-revalidate"],
+          "/**/*.js": ["Cache-Control: public, max-age=31536000, immutable"],
+          "/**/*.css": ["Cache-Control: public, max-age=31536000, immutable"],
         },
       },
     },