diff --git a/src/etcp_bbr.c b/src/etcp_bbr.c
index e7a9e9a6..4a332c58 100644
--- a/src/etcp_bbr.c
+++ b/src/etcp_bbr.c
@@ -81,11 +81,9 @@ static uint32_t bbr_ack_aggregation_cwnd(const struct bbr* bbr, uint32_t mss)
 {
     uint32_t max_aggr_cwnd, aggr_cwnd = 0;
     (void)mss;
-    if (BBR_EXTRA_ACKED_GAIN) {
-        max_aggr_cwnd = (uint32_t)((uint64_t)bbr_bw(bbr) * 100000U / BW_UNIT);
-        aggr_cwnd = (uint32_t)((uint32_t)BBR_EXTRA_ACKED_GAIN * bbr_extra_acked(bbr) >> BBR_SCALE);
-        aggr_cwnd = (uint32_t)(aggr_cwnd < max_aggr_cwnd ? aggr_cwnd : max_aggr_cwnd);
-    }
+    max_aggr_cwnd = (uint32_t)((uint64_t)bbr_bw(bbr) * 100000U / BW_UNIT);
+    aggr_cwnd = (uint32_t)((uint32_t)BBR_EXTRA_ACKED_GAIN * bbr_extra_acked(bbr) >> BBR_SCALE);
+    aggr_cwnd = (uint32_t)(aggr_cwnd < max_aggr_cwnd ? aggr_cwnd : max_aggr_cwnd);
     return aggr_cwnd;
 }
 
@@ -663,8 +661,7 @@ static void bbr_update_ack_aggregation(struct bbr* bbr, const struct bbr_rate_sa
     uint64_t now_us;
     (void)mss;
 
-    if (!BBR_EXTRA_ACKED_GAIN || rs->acked_sacked <= 0 ||
-        rs->interval_us <= 0)
+    if (rs->acked_sacked <= 0 || rs->interval_us <= 0)
         return;
 
     if (bbr->round_start) {