guard against negative sleep amount

1 files changed, 1 insertions, 1 deletions

diff --git a/opentrack/tracker.cpp b/opentrack/tracker.cpp
index c96bb9b4..bb7a15c6 100644
--- a/opentrack/tracker.cpp
+++ b/opentrack/tracker.cpp
@@ -198,7 +198,7 @@ void Tracker::run() {
         logic();
 
         long q = sleep_ms * 1000L - t.elapsed()/1000L;
-        usleep(q);
+        usleep(std::max(1L, q));
     }
 
     {