diff --git a/library/rsa.c b/library/rsa.c
index 9cadd1b..cde07e3 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -2623,7 +2623,7 @@
     if( verbose != 0 )
         mbedtls_printf( "passed\n  PKCS#1 encryption : " );
 
-    mbedtls_platform_memcpy( rsa_plaintext, RSA_PT, PT_LEN );
+    memcpy( rsa_plaintext, RSA_PT, PT_LEN );
 
     if( mbedtls_rsa_pkcs1_encrypt( &rsa, myrand, NULL, MBEDTLS_RSA_PUBLIC,
                                    PT_LEN, rsa_plaintext,