diff --git a/examples/ExternalPointMass/externalPointMass.yml b/examples/ExternalPointMass/externalPointMass.yml
index c6ab8af09ccc4f659c241f2ec91ff86f16043ac6..d06c165651ce8f33692d1512ddd8fdae80ffb556 100644
--- a/examples/ExternalPointMass/externalPointMass.yml
+++ b/examples/ExternalPointMass/externalPointMass.yml
@@ -43,4 +43,5 @@ PointMass:
   position_y:      50.
   position_z:      50.	
   mass:            1e10     # mass of external point mass in internal units
+  timestep_mult:   0.03     # controls time step
 
diff --git a/examples/IsothermalPotential/GravityOnly/externalGravity.yml b/examples/IsothermalPotential/GravityOnly/isothermal.yml
similarity index 100%
rename from examples/IsothermalPotential/GravityOnly/externalGravity.yml
rename to examples/IsothermalPotential/GravityOnly/isothermal.yml
diff --git a/examples/IsothermalPotential/GravityOnly/run.sh b/examples/IsothermalPotential/GravityOnly/run.sh
index caa616f56ed18ec84209829b183ea08d89b71348..329d04d30a6ccba7036f3802ff184c854ed00761 100755
--- a/examples/IsothermalPotential/GravityOnly/run.sh
+++ b/examples/IsothermalPotential/GravityOnly/run.sh
@@ -7,4 +7,4 @@ then
     python makeIC.py 1000 1
 fi
 
-../../swift -g -t 2 externalGravity.yml
+../../swift -g -t 2 isothermal.yml
diff --git a/examples/parameter_example.yml b/examples/parameter_example.yml
index ff4b3e1c37af0dc64ee57df5c05361e44dc975d2..edb0885d621975850a09e4298b8e035ebb45a3cd 100644
--- a/examples/parameter_example.yml
+++ b/examples/parameter_example.yml
@@ -70,10 +70,11 @@ PointMass:
   position_y:      50.
   position_z:      50.
   mass:            1e10     # mass of external point mass in internal units
+  timestep_mult:   0.03     # Pre-factor for the time-step condition
 
 IsothermalPotential:
   position_x:      100.     # Location of centre of isothermal potential in internal units
   position_y:      100.
-  position_z:      100.	
+  position_z:      100.
   vrot:            200.     # Rotation speed of isothermal potential in internal units
   timestep_mult:   0.03     # Pre-factor for the time-step condition