diff --git a/platformio.ini b/platformio.ini
index b0783259..8aef300d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -108,6 +108,7 @@ build_flags_all =
     -mfix-esp32-psram-cache-issue
 
 [env]
+lib_ldf_mode = deep ; #632 Fixes compiler error with OneBitDisplay library
 framework = arduino
 board = esp32dev
 board_build.partitions = min_spiffs.csv