diff --git a/tensorflow/lite/micro/memory_planner/linear_memory_planner.cc b/tensorflow/lite/micro/memory_planner/linear_memory_planner.cc
index 5c6afb5..00d707a 100644
--- a/tensorflow/lite/micro/memory_planner/linear_memory_planner.cc
+++ b/tensorflow/lite/micro/memory_planner/linear_memory_planner.cc
@@ -19,6 +19,9 @@
 
 namespace tflite {
 
+// C++11 requires defining a constexpr static class member in a .cc file
+constexpr int tflite::LinearMemoryPlanner::kMaxBufferCount;
+
 LinearMemoryPlanner::LinearMemoryPlanner()
     : current_buffer_count_(0), next_free_offset_(0) {}
 LinearMemoryPlanner::~LinearMemoryPlanner() {}