diff --git a/source/simulate/profile-simulation.md b/source/simulate/profile-simulation.md
index 421bc3a5..c3f001cd 100644
--- a/source/simulate/profile-simulation.md
+++ b/source/simulate/profile-simulation.md
@@ -1,4 +1,4 @@
-# Profiling a simulation's performance 
+# Profiling a simulation's performance
 
 The following outlines how to tackle a simulation that is running too slow.
 
diff --git a/source/simulate/replicate-simulation-inputs.md b/source/simulate/replicate-simulation-inputs.md
index 5e7d09bd..dadd946e 100644
--- a/source/simulate/replicate-simulation-inputs.md
+++ b/source/simulate/replicate-simulation-inputs.md
@@ -25,7 +25,7 @@ simulation = simulation_builder.build_from_entities(tax_benefit_system, WITH_AXE
 
 Be careful to note the structure of the "axes" field: an **array of arrays** of axis objects.
 
-This example describes one household with two parents and one child, plus a second household which is in fact a single adult person. 
+This example describes one household with two parents and one child, plus a second household which is in fact a single adult person.
 With this simulation the following code indicates that there will be 40 results:
 
 ```py
diff --git a/source/simulate/run-simulation.md b/source/simulate/run-simulation.md
index 11411656..d5119c14 100644
--- a/source/simulate/run-simulation.md
+++ b/source/simulate/run-simulation.md
@@ -1,12 +1,12 @@
 # How to run a simulation
 
-To calculate legislation variables on people's situations, a _Simulation_ needs to be created and run. 
+To calculate legislation variables on people's situations, a _Simulation_ needs to be created and run.
 OpenFisca looks for two kinds of inputs:
 
 - how persons are dispatched in other entities,
 - what variables' values are already known.
 
-This is true for both [test cases](run-simulation.md#test-cases) and [data](run-simulation.md#data), the two approaches to running Simulations, 
+This is true for both [test cases](run-simulation.md#test-cases) and [data](run-simulation.md#data), the two approaches to running Simulations.
 
 ## How to run a simulation on a test case
 
@@ -249,7 +249,7 @@ The following example calculates the `income_tax` of the 8th person in the list:
 
 #### Application: calculate households total taxes from a CSV file
 
-This example will manage the `persons` and `households` entities. To calculate households' `total_taxes`, it requires each persons' `income_tax`. 
+This example will manage the `persons` and `households` entities. To calculate households' `total_taxes`, it requires each persons' `income_tax`.
 First link the persons list to the households and define their roles.
 
 Persons and households lists in this example are defined in distinct files: