diff --git a/doc/src/pair_python.txt b/doc/src/pair_python.txt
index af6d08cb56651c1d2e067a2433cb6a7f024c2c44..557db37bbb3feafce84ec605a5e501f51dd41ba3 100644
--- a/doc/src/pair_python.txt
+++ b/doc/src/pair_python.txt
@@ -107,15 +107,15 @@ class LJCutMelt(LAMMPSPairPotential):
         # set coeffs: 48*eps*sig**12, 24*eps*sig**6,
         #              4*eps*sig**12,  4*eps*sig**6
         self.units = 'lj'
-        self.coeff = {'lj'  : {'lj'  : (48.0,24.0,4.0,4.0)}}
+        self.coeff = \{'lj'  : \{'lj'  : (48.0,24.0,4.0,4.0)\}\}
 :pre
 
 The class also has to provide two methods for the computation of the
 potential energy and forces, which have be named {compute_force},
 and {compute_energy}, which both take 3 numerical arguments:
 
-  rsq   = the square of the distance between a pair of atoms (float) :li
-  itype = the (numerical) type of the first atom :li
+  rsq   = the square of the distance between a pair of atoms (float) :l
+  itype = the (numerical) type of the first atom :l
   jtype = the (numerical) type of the second atom :ul
 
 This functions need to compute the force and the energy, respectively,
diff --git a/examples/ASPHERE/poly/in.poly b/examples/ASPHERE/poly/in.poly
index 77df095e1518192862065a8d05671f4bd0ab20e4..3496a774bbb05af9c1b2627f502bc57f4c98e471 100644
--- a/examples/ASPHERE/poly/in.poly
+++ b/examples/ASPHERE/poly/in.poly
@@ -62,6 +62,7 @@ pair_coeff	3 3 1.0 1.5
 pair_coeff	1 4 0.0 1.0 0.5
 pair_coeff	2 4 0.0 1.0 1.0
 pair_coeff	3 4 0.0 1.0 0.75
+pair_coeff	4 4 0.0 1.0 0.0
 
 delete_atoms	overlap 1.0 small big
 
diff --git a/examples/ASPHERE/poly/in.poly.mp b/examples/ASPHERE/poly/in.poly.mp
index 5ced616e7c664fc756626f3ddf6d4907c1d39e8f..1c6a1faee36f0395a494131a8fe98faa55be19a7 100644
--- a/examples/ASPHERE/poly/in.poly.mp
+++ b/examples/ASPHERE/poly/in.poly.mp
@@ -62,6 +62,7 @@ pair_coeff	3 3 1.0 1.5
 pair_coeff	1 4 0.0 1.0 0.5
 pair_coeff	2 4 0.0 1.0 1.0
 pair_coeff	3 4 0.0 1.0 0.75
+pair_coeff	4 4 0.0 1.0 0.0
 
 delete_atoms	overlap 1.0 small big