1 files changed, 2 insertions, 2 deletions
diff --git a/src/mac/cmac/cmac.cpp b/src/mac/cmac/cmac.cpp
index baf22f4e8..7cd53f578 100644
--- a/src/mac/cmac/cmac.cpp
+++ b/src/mac/cmac/cmac.cpp
@@ -38,7 +38,7 @@ SecureVector<byte> CMAC::poly_double(const MemoryRegion<byte>& in,
 */
 void CMAC::add_data(const byte input[], size_t length)
    {
-   buffer.copy(position, input, length);
+   buffer_insert(buffer, position, input, length);
    if(position + length > output_length())
       {
       xor_buf(state, buffer, output_length());
@@ -52,7 +52,7 @@ void CMAC::add_data(const byte input[], size_t length)
          input += output_length();
          length -= output_length();
          }
-      buffer.copy(input, length);
+      copy_mem(&buffer[0], input, length);
       position = 0;
       }
    position += length;