diff --git a/tools/regression-tests/config_quick.yaml b/tools/regression-tests/config_quick.yaml
index 8f2ba9aaa6..3c8cc4e51b 100644
--- a/tools/regression-tests/config_quick.yaml
+++ b/tools/regression-tests/config_quick.yaml
@@ -1,9 +1,9 @@
 ---
   lmp_binary: ""
-  nprocs: "4"
+  nprocs: "1"
   args: "-cite none"
-  mpiexec: "mpirun"
-  mpiexec_numproc_flag: "--host localhost:4 -np"
+  mpiexec: ""
+  mpiexec_numproc_flag: ""
   tolerance:
     PotEng:
       abs: 1e-4
diff --git a/tools/regression-tests/config_serial.yaml b/tools/regression-tests/config_serial.yaml
index 1fe3f48353..b55cc1547d 100644
--- a/tools/regression-tests/config_serial.yaml
+++ b/tools/regression-tests/config_serial.yaml
@@ -29,7 +29,8 @@
         abs: 1e-2
         rel: 1e-4
   skip:
-    [ in.displ,
+    [
+      in.displ,
       in.displ2,
       in.dos,
       in.*_imd*,