diff --git a/.github/workflows/self-prod.yml b/.github/workflows/self-prod.yml
index 6538a8b..a31cc70 100644
--- a/.github/workflows/self-prod.yml
+++ b/.github/workflows/self-prod.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         environment: ${{ fromJson(
-          github.event_name == 'workflow_dispatch' && '[${{ inputs.environment }}]' || '["staging", "production"]') }}
+          github.event_name == 'workflow_dispatch' && '["${{ inputs.environment }}"]' || '["staging", "production"]') }}
       max-parallel: 1
 
     environment: ${{ matrix.environment }}