diff --git a/library/ccm.c b/library/ccm.c
index 109927e..75de8cb 100644
--- a/library/ccm.c
+++ b/library/ccm.c
@@ -81,7 +81,7 @@
     if( cipher_info->block_size != 16 )
         return( MBEDTLS_ERR_CCM_BAD_INPUT );
 
-    if( ( ret = mbedtls_cipher_init_ctx( &ctx->cipher_ctx, cipher_info ) ) != 0 )
+    if( ( ret = mbedtls_cipher_setup( &ctx->cipher_ctx, cipher_info ) ) != 0 )
         return( ret );
 
     if( ( ret = mbedtls_cipher_setkey( &ctx->cipher_ctx, key, keysize,