diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 701e56e33e..fd76168906 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -640,7 +640,7 @@ jobs:
 
       - run: |
           set -o pipefail
-          COMPLEMENT_DIR=`pwd`/complement synapse/scripts-dev/complement.sh -json -p 2 2>&1 | synapse/.ci/scripts/gotestfmt
+          COMPLEMENT_DIR=`pwd`/complement synapse/scripts-dev/complement.sh -json -p 1 2>&1 | synapse/.ci/scripts/gotestfmt
         shell: bash
         env:
           POSTGRES: ${{ (matrix.database == 'Postgres') && 1 || '' }}