diff --git a/wifi/1.6/default/wifi_legacy_hal.cpp b/wifi/1.6/default/wifi_legacy_hal.cpp
index 8a75fd8..bb8cf59 100644
--- a/wifi/1.6/default/wifi_legacy_hal.cpp
+++ b/wifi/1.6/default/wifi_legacy_hal.cpp
@@ -1549,13 +1549,14 @@
 
 std::pair<wifi_error, wifi_radio_combination_matrix*>
 WifiLegacyHal::getSupportedRadioCombinationsMatrix() {
-    std::array<char, kMaxSupportedRadioCombinationsMatrixLength> buffer;
-    buffer.fill(0);
+    char* buffer = new char[kMaxSupportedRadioCombinationsMatrixLength];
+    std::fill(buffer, buffer + kMaxSupportedRadioCombinationsMatrixLength, 0);
     uint32_t size = 0;
     wifi_radio_combination_matrix* radio_combination_matrix_ptr =
-            reinterpret_cast<wifi_radio_combination_matrix*>(buffer.data());
+            reinterpret_cast<wifi_radio_combination_matrix*>(buffer);
     wifi_error status = global_func_table_.wifi_get_supported_radio_combinations_matrix(
-            global_handle_, buffer.size(), &size, radio_combination_matrix_ptr);
+            global_handle_, kMaxSupportedRadioCombinationsMatrixLength, &size,
+            radio_combination_matrix_ptr);
     CHECK(size >= 0 && size <= kMaxSupportedRadioCombinationsMatrixLength);
     return {status, radio_combination_matrix_ptr};
 }