diff --git a/platformio.ini b/platformio.ini
index 77f8f5c..219ed3b 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -31,6 +31,7 @@ build_flags =
   -D EMC_RX_BUFFER_SIZE=100
   -D EMC_TX_BUFFER_SIZE=10
   -D EMC_MULTIPLE_CALLBACKS=1
+  -D EMC_USE_MEMPOOL=1
 ;extra_scripts = test-coverage.py
 build_type = debug
 test_testing_command =