1 files changed, 1 insertions, 1 deletions
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
index 90fded8ad..9073c611a 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDeviceThreadPool.h
@@ -172,7 +172,7 @@ struct ThreadPoolDevice {
     pool_->Schedule(func);
   }
 
-  EIGEN_STRONG_INLINE size_t currentThreadId() const {
+  EIGEN_STRONG_INLINE int currentThreadId() const {
     return pool_->CurrentThreadId();
   }