diff --git a/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp b/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp
index 6d9e0252..11d2aacc 100644
--- a/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp
+++ b/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp
@@ -2879,14 +2879,15 @@ TEST_F(DISABLED_TestKeybox, RSASignature) {
   OEMCrypto_GetRandom(&licenseRequest[0], licenseRequest.size());
   size_t signature_length = 0;
 
+  uint8_t signature[500];
+
   sts = OEMCrypto_GenerateRSASignature(s.session_id(), &licenseRequest[0],
-                                       licenseRequest.size(), NULL,
+                                       licenseRequest.size(), signature,
                                        &signature_length, kSign_RSASSA_PSS);
 
   ASSERT_EQ(OEMCrypto_ERROR_SHORT_BUFFER, sts);
   ASSERT_NE(static_cast<size_t>(0), signature_length);
-
-  uint8_t* signature = new uint8_t[signature_length];
+  ASSERT_GE(sizeof(signature), signature_length);
 
   sts = OEMCrypto_GenerateRSASignature(s.session_id(), &licenseRequest[0],
                                        licenseRequest.size(), signature,
@@ -2898,7 +2899,6 @@ TEST_F(DISABLED_TestKeybox, RSASignature) {
   s.PreparePublicKey();
   s.VerifyRSASignature(&licenseRequest[0], licenseRequest.size(), signature,
                        signature_length, kSign_RSASSA_PSS);
-  delete[] signature;
 }
 
 TEST_F(DISABLED_TestKeybox, LoadRSASessionKey) {