--- a/dist/LoadNodesAndCredentials.js
+++ b/dist/LoadNodesAndCredentials.js
@@ -216,6 +216,7 @@
         const { types } = loader;
         this.types.nodes = this.types.nodes.concat(types.nodes);
         this.types.credentials = this.types.credentials.concat(types.credentials);
+        let seen = new Set();
         const iconPromises = Object.entries(types).flatMap(([typeName, typesArr]) => typesArr.map((type) => {
             var _a;
             if (!((_a = type.icon) === null || _a === void 0 ? void 0 : _a.startsWith('file:')))
@@ -226,7 +227,16 @@
             type.iconUrl = iconUrl;
             const source = path_1.default.join(dir, icon);
             const destination = path_1.default.join(constants_1.GENERATED_STATIC_DIR, iconUrl);
-            return (0, promises_1.mkdir)(path_1.default.dirname(destination), { recursive: true }).then(async () => (0, promises_1.copyFile)(source, destination));
+            if (!seen.has(destination)) {
+                seen.add(destination);
+                return (0, promises_1.mkdir)(path_1.default.dirname(destination), { recursive: true }).then(async () => {
+                    await (0, promises_1.copyFile)(source, destination);
+                    await (0, promises_1.chmod)(destination, 0o644);
+                });
+            }
+            else {
+                return Promise.resolve();
+            }
         }));
         await Promise.all(iconPromises);
         for (const nodeTypeName in loader.nodeTypes) {