diff --git a/src/erasure-code/clay/ErasureCodeClay.cc b/src/erasure-code/clay/ErasureCodeClay.cc
index d4f25e31d5f..851d392346b 100644
--- a/src/erasure-code/clay/ErasureCodeClay.cc
+++ b/src/erasure-code/clay/ErasureCodeClay.cc
@@ -388,7 +388,8 @@ void ErasureCodeClay::get_repair_subchunks(const int &lost_node,
 
 int ErasureCodeClay::get_repair_sub_chunk_count(const set<int> &want_to_read)
 {
-  int weight_vector[t] = {0};
+  int weight_vector[t];
+  std::fill(weight_vector, weight_vector + t, 0);
   for (auto to_read : want_to_read) {
     weight_vector[to_read / q]++;
   }