diff --git a/both_webgpu/both.mjs b/both_webgpu/both.mjs
index 4006608..23ee7cd 100644
--- a/both_webgpu/both.mjs
+++ b/both_webgpu/both.mjs
@@ -1,3 +1,5 @@
+import { greeting } from "./greeting.mjs";
+
 async function getDeviceAndAdapter(navigator) {
   const adapter = await navigator.gpu.requestAdapter();
   const hasSubgroups = adapter.features.has("subgroups");
@@ -26,6 +28,7 @@ async function main(navigator) {
   } else {
     console.log("  I'm probably running in a web browser.");
   }
+  greeting();
 
   const workgroupSize = 64;
   const memsrcSize = 2 ** 24;
diff --git a/both_webgpu/greeting.mjs b/both_webgpu/greeting.mjs
new file mode 100644
index 0000000..51c2dbe
--- /dev/null
+++ b/both_webgpu/greeting.mjs
@@ -0,0 +1,4 @@
+function greeting() {
+  console.log("Secret greeting!");
+}
+export { greeting };