diff --git a/source/contributing/services/wrapper.rst b/source/contributing/services/wrapper.rst
index e4ebad3..c76d1f0 100644
--- a/source/contributing/services/wrapper.rst
+++ b/source/contributing/services/wrapper.rst
@@ -37,6 +37,6 @@ The project structure should be used as a model:
 Submodule
 ==========
 
-`Git sub-modules <https://www.git-scm.com/book/en/v2/Git-Tools-Submodules>`_ allow use of another project while in the working project directory. Setting up this feature enables linking of the source service repository so that it's context is available.
+`Git sub-modules <https://www.git-scm.com/book/en/v2/Git-Tools-Submodules>`_ allow use of another project while in the working project directory. Setting up this feature enables linking of the source service repository so that its context is available.
 
 Run ``git submodule add <link_to_source_project>``
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