diff --git a/tests/suites/test_suite_x509write.function b/tests/suites/test_suite_x509write.function
index e15802ff1..7a359b1c6 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -57,6 +57,7 @@ static int x509_crt_verifycsr( const unsigned char *buf, size_t buflen )
         return( MBEDTLS_ERR_X509_CERT_VERIFY_FAILED );
     }
 
+    mbedtls_x509_csr_free( &csr );
     return( 0 );
 }
 #endif /* MBEDTLS_USE_PSA_CRYPTO */