diff --git a/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js b/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js
index 5fe08cc..3e5bd3b 100644
--- a/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js
+++ b/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js
@@ -19,7 +19,7 @@ async function cachedFetch(url, init, opts = {}) {
       }
     }
 
-    if (opts?.cache) {
+    if (opts?.cache && window.cache) {
       cache = await caches.open(opts.cache.name);
       res = await cache.match(url);
       isCached = !!res;
diff --git a/lib/www/client/source/src/store/modules/api/actions.js b/lib/www/client/source/src/store/modules/api/actions.js
index 49d2e0b..b291805 100644
--- a/lib/www/client/source/src/store/modules/api/actions.js
+++ b/lib/www/client/source/src/store/modules/api/actions.js
@@ -61,7 +61,7 @@ async function api ({state, getters, commit, dispatch}, [resource, init = {}, cb
       }
     }
 
-    if (opts?.cache) {
+    if (opts?.cache && window.caches) {
       cache = await caches.open(opts.cache.name);
       res = await cache.match(url);
       isCached = !!res;
diff --git a/lib/www/client/source/src/views/Map.vue b/lib/www/client/source/src/views/Map.vue
index 95da4a8..31b8cea 100644
--- a/lib/www/client/source/src/views/Map.vue
+++ b/lib/www/client/source/src/views/Map.vue
@@ -879,13 +879,15 @@ export default {
     },
 
     async refresh () {
-      const cache = await caches.open("dougal");
-      for (const key of await cache.keys()) {
-        // Match only resolved requests
-        if (key instanceof Request) {
-          if (key.url?.match(`/project/${this.$route.params.project}`)) {
-            console.log("removing", key.method, key.url);
-            cache.delete(key);
+      if (window.caches) {
+        const cache = await caches.open("dougal");
+        for (const key of await cache.keys()) {
+          // Match only resolved requests
+          if (key instanceof Request) {
+            if (key.url?.match(`/project/${this.$route.params.project}`)) {
+              console.log("removing", key.method, key.url);
+              cache.delete(key);
+            }
           }
         }
       }