diff --git a/examples/peri/in.peri b/examples/peri/in.peri
index 2e5bb526fc..2e3dc59f6c 100644
--- a/examples/peri/in.peri
+++ b/examples/peri/in.peri
@@ -1,6 +1,6 @@
 # small Peridynamic cylinder hit by projectile
 
-units si
+units		si
 boundary        s s s
 atom_style      peri
 atom_modify	map array
@@ -15,8 +15,8 @@ create_atoms    1 region target
 
 pair_style      peri/pmb
 pair_coeff      * * 1.6863e22 0.0015001 0.0005 0.25
-set             group all density 2200
 
+set             group all density 2200
 set             group all volume 1.25e-10
 velocity        all set 0.0 0.0 0.0 sum no units box
 fix             1 all nve