diff --git a/src/core/or/congestion_control_common.c b/src/core/or/congestion_control_common.c
index c1a62cada0..b90c78729a 100644
--- a/src/core/or/congestion_control_common.c
+++ b/src/core/or/congestion_control_common.c
@@ -857,8 +857,10 @@ congestion_control_update_circuit_rtt(congestion_control_t *cc,
     cc->max_rtt_usec = rtt;
   }
 
-  if (cc->min_rtt_usec == 0 || rtt < cc->min_rtt_usec) {
-    cc->min_rtt_usec = rtt;
+  if (cc->min_rtt_usec == 0 || cc->ewma_rtt_usec < cc->min_rtt_usec) {
+    // Using the EWMA for min instead of current RTT helps average out
+    // effects from other conns
+    cc->min_rtt_usec = cc->ewma_rtt_usec;
   }
 
   return rtt;