diff --git a/unittest/force-styles/tests/manybody-pair-snap.yaml b/unittest/force-styles/tests/manybody-pair-snap.yaml
index 139d1b94d0..57e0e9d599 100644
--- a/unittest/force-styles/tests/manybody-pair-snap.yaml
+++ b/unittest/force-styles/tests/manybody-pair-snap.yaml
@@ -14,7 +14,8 @@ pair_style: hybrid/overlay zbl 4.0 4.8 snap
 pair_coeff: ! |
   1*8 1*8 zbl 73 73
   * * snap Ta06A.snapcoeff Ta06A.snapparam Ta Ta Ta Ta Ta Ta Ta Ta
-extract: ! ""
+extract: ! |
+  scale 2
 natoms: 64
 init_vdwl: -473.569864629026
 init_coul: 0
diff --git a/unittest/force-styles/tests/manybody-pair-snap_chem.yaml b/unittest/force-styles/tests/manybody-pair-snap_chem.yaml
index 39d2abd804..b97709863e 100644
--- a/unittest/force-styles/tests/manybody-pair-snap_chem.yaml
+++ b/unittest/force-styles/tests/manybody-pair-snap_chem.yaml
@@ -16,7 +16,8 @@ pair_coeff: ! |
   1*4 5*8 zbl 49 15
   5*8 5*8 zbl 15 15
   * * snap InP_JCPA2020.snapcoeff InP_JCPA2020.snapparam In In In In P P P P
-extract: ! ""
+extract: ! |
+  scale 2
 natoms: 64
 init_vdwl: -185.3871232982
 init_coul: 0