diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4acf9361d7aefdd66174d09bdcefc4b78f517270..8e4ea72829818d26207a4e6c2cee061dd74a6bf0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -30,7 +30,7 @@ jobs:
           command: |
             # Set XDG_CONFIG_DIRS to point at the source directory, so that nix
             # will pickup nix/nix.conf as a configuration file from there.
-            set -x
+            echo "Shell: $0"
             echo "export XDG_CONFIG_DIRS=$CIRCLE_WORKING_DIRECTORY" >> $BASH_ENV
 
       # Get *our* source code.