diff --git a/server/TracyWorker.cpp b/server/TracyWorker.cpp
index 59f64159..1bf0449e 100644
--- a/server/TracyWorker.cpp
+++ b/server/TracyWorker.cpp
@@ -2350,6 +2350,8 @@ void Worker::ProcessZoneEnd( const QueueZoneEnd& ev )
                 timeSpan -= childSpan;
             }
         }
+        it->second.selfMin = std::min( it->second.selfMin, timeSpan );
+        it->second.selfMax = std::max( it->second.selfMax, timeSpan );
         it->second.selfTotal += timeSpan;
     }
 #endif
@@ -3287,6 +3289,8 @@ void Worker::ReadTimelineUpdateStatistics( ZoneEvent* zone, uint16_t thread )
                     timeSpan -= childSpan;
                 }
             }
+            it->second.selfMin = std::min( it->second.selfMin, timeSpan );
+            it->second.selfMax = std::max( it->second.selfMax, timeSpan );
             it->second.selfTotal += timeSpan;
         }
     }
diff --git a/server/TracyWorker.hpp b/server/TracyWorker.hpp
index f1712e39..7d515da5 100644
--- a/server/TracyWorker.hpp
+++ b/server/TracyWorker.hpp
@@ -86,6 +86,8 @@ private:
             : min( std::numeric_limits<int64_t>::max() )
             , max( std::numeric_limits<int64_t>::min() )
             , total( 0 )
+            , selfMin( std::numeric_limits<int64_t>::max() )
+            , selfMax( std::numeric_limits<int64_t>::min() )
             , selfTotal( 0 )
         {}
 
@@ -93,6 +95,8 @@ private:
         int64_t min;
         int64_t max;
         int64_t total;
+        int64_t selfMin;
+        int64_t selfMax;
         int64_t selfTotal;
     };