diff --git a/src/gallium/drivers/swr/rasterizer/core/threads.cpp b/src/gallium/drivers/swr/rasterizer/core/threads.cpp
index f4ddc212264..6242cb3fc7c 100644
--- a/src/gallium/drivers/swr/rasterizer/core/threads.cpp
+++ b/src/gallium/drivers/swr/rasterizer/core/threads.cpp
@@ -213,8 +213,7 @@ void CalculateProcessorTopology(CPUNumaNodes& out_nodes, uint32_t& out_numThread
     {
         for (auto &core : node.cores)
         {
-            out_numThreadsPerProcGroup = std::max((size_t)out_numThreadsPerProcGroup,
-                                                  core.threadIds.size());
+            out_numThreadsPerProcGroup += core.threadIds.size();
         }
     }