diff --git a/profiler/src/profiler/TracyTimelineDraw.hpp b/profiler/src/profiler/TracyTimelineDraw.hpp
index 3c814d3b..dc599a9a 100644
--- a/profiler/src/profiler/TracyTimelineDraw.hpp
+++ b/profiler/src/profiler/TracyTimelineDraw.hpp
@@ -43,10 +43,18 @@ struct ContextSwitchDraw
 };
 
 
+enum class SampleType
+{
+    Own,
+    External,
+    Kernel
+};
+
 struct SamplesDraw
 {
     uint32_t num;
     uint32_t idx;
+    SampleType type;
 };
 
 
diff --git a/profiler/src/profiler/TracyTimelineItemThread.cpp b/profiler/src/profiler/TracyTimelineItemThread.cpp
index 72c1412a..9732c74a 100644
--- a/profiler/src/profiler/TracyTimelineItemThread.cpp
+++ b/profiler/src/profiler/TracyTimelineItemThread.cpp
@@ -625,7 +625,39 @@ void TimelineItemThread::PreprocessSamples( const TimelineContext& ctx, const Ve
                 nextTime = nt + MinVisNs;
             }
         }
-        m_samplesDraw.emplace_back( SamplesDraw { uint32_t( next - it - 1 ), uint32_t( it - vec.begin() ) } );
+        const auto num = uint32_t( next - it - 1 );
+        const auto idx = uint32_t( it - vec.begin() );
+        if( num == 0 )
+        {
+            auto type = SampleType::Own;
+            auto& cs = m_worker.GetCallstack( it->callstack.Val() );
+            auto frameData = m_worker.GetCallstackFrame( cs[0] );
+            if( frameData )
+            {
+                const auto& frame = frameData->data[0];
+                if( frame.symAddr >> 63 != 0 )
+                {
+                    type = SampleType::Kernel;
+                }
+                else if( m_worker.IsFrameExternal( frame.file, frameData->imageName ) )
+                {
+                    type = SampleType::External;
+                }
+            }
+
+            m_samplesDraw.emplace_back( SamplesDraw {
+                .num = 0,
+                .idx = idx,
+                .type = type
+            } );
+        }
+        else
+        {
+            m_samplesDraw.emplace_back( SamplesDraw {
+                .num = num,
+                .idx = idx
+            } );
+        }
         it = next;
     }
 }