diff --git a/.cargo/config.toml b/.cargo/config.toml
index 72e2cf5..82a4b24 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -21,3 +21,6 @@ rustflags = [
 
 [build]
 target = "thumbv6m-none-eabi"
+
+[env]
+DEFMT_LOG = "debug"