diff --git a/bin/omarchy-agent-hermes b/bin/omarchy-agent-hermes
index eb81495b..93175818 100755
--- a/bin/omarchy-agent-hermes
+++ b/bin/omarchy-agent-hermes
@@ -7,6 +7,7 @@
 set -euo pipefail
 
 prompt=${1:?usage: omarchy-agent-hermes <prompt>}
+unset HERMES_SESSION_SOURCE
 usage=$(mktemp)
 trap 'rm -f "$usage"' EXIT
 
diff --git a/test/shell.d/hermes-agent-test.sh b/test/shell.d/hermes-agent-test.sh
index 174958d0..3339df24 100755
--- a/test/shell.d/hermes-agent-test.sh
+++ b/test/shell.d/hermes-agent-test.sh
@@ -68,7 +68,7 @@ export HERMES_TEST_SETUP_MARKER="$setup_marker"
 
 sentinel="$test_tmp/hermes-seed-must-stay-literal"
 prompt="--help !Crash /quit {!touch $sentinel}"$'\ntrailing\\'
-"$ROOT/bin/omarchy-agent-hermes" "$prompt" >/dev/null
+HERMES_SESSION_SOURCE=gateway "$ROOT/bin/omarchy-agent-hermes" "$prompt" >/dev/null
 
 mapfile -d '' -t oneshot_args <"$oneshot_log"
 (( ${#oneshot_args[@]} == 4 )) || fail "Hermes literal seed has four one-shot arguments"