diff --git a/client/TracySysTrace.cpp b/client/TracySysTrace.cpp
index aa75a07d..72e098c4 100644
--- a/client/TracySysTrace.cpp
+++ b/client/TracySysTrace.cpp
@@ -141,7 +141,7 @@ void WINAPI EventRecordCallback( PEVENT_RECORD record )
         if( hdr.EventDescriptor.Opcode == 32 )
         {
             const auto sw = (const StackWalkEvent*)record->UserData;
-            if( sw->stackProcess == s_pid )
+            if( sw->stackProcess == s_pid && ( sw->stack[0] & 0x8000000000000000 ) == 0 )
             {
                 const uint64_t sz = ( record->UserDataLength - 16 ) / 8;
                 auto trace = (uint64_t*)tracy_malloc( ( 1 + sz ) * sizeof( uint64_t ) );