diff --git a/.github/workflows/regression.yml b/.github/workflows/regression.yml
index 14b401c..467efaf 100644
--- a/.github/workflows/regression.yml
+++ b/.github/workflows/regression.yml
@@ -41,7 +41,7 @@ jobs:
         run: sudo -u postgres psql -c "CREATE TABLESPACE testts LOCATION '/tmp/testts'"
 
       - name: Create 1testts tablespace
-        run: sudo -u postgres psql -c "CREATE TABLESPACE 1testts LOCATION '/tmp/1testts'"
+        run: sudo -u postgres psql -c "CREATE TABLESPACE \"1testts\" LOCATION '/tmp/1testts'"
 
       - name: Test on PostgreSQL ${{ matrix.pg }}
         run: pg-build-test