diff --git a/library/blowfish.c b/library/blowfish.c
index 7e1cfbd..7b2a8d5 100644
--- a/library/blowfish.c
+++ b/library/blowfish.c
@@ -293,13 +293,13 @@
     {
         while( length > 0 )
         {
-            memcpy( temp, input, MBEDTLS_BLOWFISH_BLOCKSIZE );
+            mbedtls_platform_memcpy( temp, input, MBEDTLS_BLOWFISH_BLOCKSIZE );
             mbedtls_blowfish_crypt_ecb( ctx, mode, input, output );
 
             for( i = 0; i < MBEDTLS_BLOWFISH_BLOCKSIZE;i++ )
                 output[i] = (unsigned char)( output[i] ^ iv[i] );
 
-            memcpy( iv, temp, MBEDTLS_BLOWFISH_BLOCKSIZE );
+            mbedtls_platform_memcpy( iv, temp, MBEDTLS_BLOWFISH_BLOCKSIZE );
 
             input  += MBEDTLS_BLOWFISH_BLOCKSIZE;
             output += MBEDTLS_BLOWFISH_BLOCKSIZE;
@@ -314,7 +314,7 @@
                 output[i] = (unsigned char)( input[i] ^ iv[i] );
 
             mbedtls_blowfish_crypt_ecb( ctx, mode, output, output );
-            memcpy( iv, output, MBEDTLS_BLOWFISH_BLOCKSIZE );
+            mbedtls_platform_memcpy( iv, output, MBEDTLS_BLOWFISH_BLOCKSIZE );
 
             input  += MBEDTLS_BLOWFISH_BLOCKSIZE;
             output += MBEDTLS_BLOWFISH_BLOCKSIZE;