diff --git a/sf-buffer/src/sf_buffer.cpp b/sf-buffer/src/sf_buffer.cpp
index ea52a99..510b745 100644
--- a/sf-buffer/src/sf_buffer.cpp
+++ b/sf-buffer/src/sf_buffer.cpp
@@ -93,6 +93,6 @@ int main (int argc, char *argv[]) {
                 (char*)(&data.first->recv_packets_2), {1}, 8,
                 "uint64", "little");
 
-        ring_buffer.reserve(data.first);
+        ring_buffer.release(data.first->buffer_slot_index);
     }
 }