diff --git a/thorlcr/graph/thgraphslave.hpp b/thorlcr/graph/thgraphslave.hpp
index a990d47782a..aca3bf3a385 100644
--- a/thorlcr/graph/thgraphslave.hpp
+++ b/thorlcr/graph/thgraphslave.hpp
@@ -481,7 +481,7 @@ class graphslave_decl CThorStrandedActivity : public CSlaveActivity
     Owned<IStrandJunction> splitter;
     Owned<IStrandJunction> sourceJunction; // A junction applied to the output of a source activity
     std::atomic<unsigned> active;
-    stat_type startCycles = 0;
+    unsigned __int64 startCycles = 0;
 protected:
     void onStartStrands();
 public: