diff --git a/kernel/build-in-docker.sh b/kernel/build-in-docker.sh
index ccef086..a905d3d 100755
--- a/kernel/build-in-docker.sh
+++ b/kernel/build-in-docker.sh
@@ -40,6 +40,7 @@ docker build --platform linux/arm64 \
 
 # 3. Compile; mount this dir so the .ko lands on the host, owned by the caller.
 echo "==> compiling module"
+echo "working directory: $PWD"
 docker run --rm --platform linux/arm64 \
 	-u "$(id -u):$(id -g)" -e HOME=/tmp \
 	-v "$PWD:/build" "$IMAGE" "$@"