diff --git a/packages/mesh-core-csl/src/core/adaptor/toObj/certificate.ts b/packages/mesh-core-csl/src/core/adaptor/toObj/certificate.ts
index c5bfb9cd4..a63fa1084 100644
--- a/packages/mesh-core-csl/src/core/adaptor/toObj/certificate.ts
+++ b/packages/mesh-core-csl/src/core/adaptor/toObj/certificate.ts
@@ -17,6 +17,11 @@ export const certificateToObj = (certificate: Certificate): object => {
         basicCertificate: baseCertToObj(baseCert),
       };
     case "ScriptCertificate":
+      if (baseCert.type === "RegisterStake") {
+        return {
+          basicCertificate: baseCertToObj(baseCert),
+        };
+      }
       return {
         scriptCertificate: {
           cert: baseCertToObj(baseCert),
@@ -29,6 +34,11 @@ export const certificateToObj = (certificate: Certificate): object => {
         },
       };
     case "SimpleScriptCertificate":
+      if (baseCert.type === "RegisterStake") {
+        return {
+          basicCertificate: baseCertToObj(baseCert),
+        };
+      }
       return {
         simpleScriptCertificate: {
           cert: baseCertToObj(baseCert),
diff --git a/run-tests.ts b/run-tests.ts
new file mode 100644
index 000000000..040780ee6
--- /dev/null
+++ b/run-tests.ts
@@ -0,0 +1,39 @@
+import { CSLSerializer } from "./packages/mesh-core-csl/src/core/serializer";
+import { MeshTxBuilderBody, emptyTxBuilderBody, Certificate, DEFAULT_PROTOCOL_PARAMETERS } from "./packages/mesh-common/src/index";
+
+async function runTests() { 
+  const body: MeshTxBuilderBody = emptyTxBuilderBody();
+  body.changeAddress = "addr_test1qr3a9rrclgf9rx90lmll2qnfzfwgrw35ukvgjrk36pmlzu0jemqwylc286744g0tnqkrvu0dkl8r48k0upkfmg7mncpqf0672w";
+  
+  const cert: Certificate = {
+    type: "ScriptCertificate",
+    certType: {
+      type: "RegisterStake",
+      stakeKeyAddress: "stake_test17ryje2rawy9d7m2fwn4nrxgch8st3anccre32g885gu232snvhvu7",
+    },
+    redeemer: {
+      data: { type: "Mesh", content: [] },
+      exUnits: { mem: 1000000, steps: 1000000 }
+    },
+    scriptSource: {
+      type: "Inline",
+      txHash: "2cb57168ee66b68bd04a0d595060b546edf30c04ae1031b883c9ac797967dd85",
+      txIndex: 0,
+      scriptHash: "e3d28c78fa125198affefff50269125c81ba34e598890ed1d077f171",
+      scriptSize: "1234"
+    }
+  };
+  body.certificates.push(cert);
+  
+  const cslSerializer = new CSLSerializer(DEFAULT_PROTOCOL_PARAMETERS as any);
+  let builtTxHex = "";
+  try {
+    builtTxHex = cslSerializer.serializeTxBody(body);
+    console.log("SUCCESS! CSL serializeTxBody successfully compiled.");
+    console.log("Tx Hex Output:", builtTxHex);
+  } catch (e: any) {
+    console.log("FAILED! CSL serializeTxBody threw:", e.message);
+  }
+}
+
+runTests();