diff --git a/.github/workflows/singularity-quicktest.yml b/.github/workflows/singularity-quicktest.yml
index 39054ffe2e..a185dc5ec2 100644
--- a/.github/workflows/singularity-quicktest.yml
+++ b/.github/workflows/singularity-quicktest.yml
@@ -14,7 +14,7 @@ jobs:
       - name: Maximize build space
         uses: easimon/maximize-build-space@master
         with:
-          root-reserve-mb: '32768'
+          root-reserve-mb: '16384'
           remove-docker-images: 'true'
           remove-android: 'true'
           remove-haskell: 'true'