diff --git a/tensorflow/lite/arena_planner.cc b/tensorflow/lite/arena_planner.cc
index d97eca46929..dd5e3777fc1 100644
--- a/tensorflow/lite/arena_planner.cc
+++ b/tensorflow/lite/arena_planner.cc
@@ -197,7 +197,8 @@ TfLiteStatus ArenaPlanner::ExecuteAllocations(int first_node, int last_node) {
   dealloc_node_.resize(graph_info_->num_tensors(), kNodeNotAssigned);
   allocs_.resize(graph_info_->num_tensors());
   // Set allocation and deallocation for temporary tensors.
-  for (size_t i = first_node; i <= last_node && i < graph_info_->num_nodes();
+  for (size_t i = first_node;
+       i <= static_cast<size_t>(last_node) && i < graph_info_->num_nodes();
        ++i) {
     const TfLiteNode& node = graph_info_->node(i);
     TfLiteIntArray* node_temporaries = node.temporaries;