diff --git a/src/algo_thunder.c b/src/algo_thunder.c
index 58edda4..a0ad598 100644
--- a/src/algo_thunder.c
+++ b/src/algo_thunder.c
@@ -247,7 +247,7 @@ void classify(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct b
       if (li[i].delta_t - ALLOWED_JITTER_MS <= thunderc->rcv_delta_t_per_link[i]) continue;
 
       struct block_info *bi = malloc(sizeof(struct block_info));
-      bi->i = i; bi->app_ctx = app_ctx; bi->missing = thunderc->received_pkts_on_link[i]+1;
+      bi->i = i; bi->app_ctx = app_ctx; bi->missing = thunderc->received_pkts_on_link[i];
 
       //printf("  Packet Too Late - Blocked link %d (expected: at least %dms ago, received: %ldms ago)\n", i, li[i].delta_t - ALLOWED_JITTER_MS, thunderc->rcv_delta_t_per_link[i]);
       on_block(ctx, bi);