diff --git a/avr/send.c b/avr/send.c
index 3cd8f18..6209c49 100644
--- a/avr/send.c
+++ b/avr/send.c
@@ -243,9 +243,10 @@ int main() {
 
             default: {
                 if (b < header.size) {
-                    b++;
+                    body[b++];
                 } else if (b == header.size) {
                     sum = c;
+                    b++;
                 } else if (b == header.size + 1) {
                     sum |= c << 8;