diff --git a/src/ripple/overlay/impl/OverlayImpl.cpp b/src/ripple/overlay/impl/OverlayImpl.cpp
index 409d687cd50..13721b62c35 100644
--- a/src/ripple/overlay/impl/OverlayImpl.cpp
+++ b/src/ripple/overlay/impl/OverlayImpl.cpp
@@ -100,7 +100,7 @@ OverlayImpl::Timer::on_timer(error_code ec)
     overlay_.sendEndpoints();
     overlay_.autoConnect();
 
-    if ((overlay_.timer_count_ % Tuning::checkIdlePeers) == 0)
+    if ((++overlay_.timer_count_ % Tuning::checkIdlePeers) == 0)
         overlay_.deleteIdlePeers();
 
     timer_.expires_from_now(std::chrono::seconds(1));