diff --git a/test/crypto.ts b/test/crypto.ts
index 93b1280..69cde13 100644
--- a/test/crypto.ts
+++ b/test/crypto.ts
@@ -75,6 +75,18 @@ context("Crypto", () => {
 
     context("generateKey", () => {
 
+      it("RSA 3072bits", async () => {
+        const alg: globalThis.RsaHashedKeyGenParams = {
+          name: "RSASSA-PKCS1-v1_5",
+          hash: "SHA-256",
+          publicExponent: new Uint8Array([1,0,1]),
+          modulusLength: 3072,
+        };
+        const keys = await crypto.subtle.generateKey(alg, false, ["sign", "verify"]);
+
+        assert.strictEqual((keys.privateKey.algorithm as RsaHashedKeyAlgorithm).modulusLength, 3072);
+      });
+
       it("Ed25519", async () => {
         const keys = await crypto.subtle.generateKey({ name: "eddsa", namedCurve: "ed25519" } as globalThis.EcKeyGenParams, false, ["sign", "verify"]);