diff --git a/opensym2017/content/03-requirements.tex b/opensym2017/content/03-requirements.tex
index 1193268..ae3d5df 100644
--- a/opensym2017/content/03-requirements.tex
+++ b/opensym2017/content/03-requirements.tex
@@ -11,7 +11,7 @@ By preparing the evolution project described in this paper, the Brazilian
 government promote 3 events to collect the requirements, in particular from
 society point of view: (i) an online form to collect general ideas; (ii) a
 face-to-face meeting with society in general; (iii) a workshop to review the
-SPB concepts and requirements with IT stockholders from the Brazilian
+SPB concepts and requirements with IT stakeholders from the Brazilian
 government and public organizations.
 
 After these 3 rounds discussing the new SPB platform, the Brazilian government listed
@@ -91,7 +91,7 @@ Also, there are two initiatives in Europe: OSOR and OW2. The Open Source
 Observatory (OSOR) is a community hosted in the JoinUp platform powereded by
 the European Commission. OSOR aims exchanging information, experiences and best
 practices around FOSS solutions for use in public administrations. Summarily,
-it helps to find an FOSS made available by other public administrations,
+it helps to find a FOSS made available by other public administrations,
 providing access to information such as news, events, studies and solutions
 related to implementation of open source software. It also offers forum
 discussions and community mailing lists, but it does not have an integrated
@@ -107,7 +107,7 @@ related development and management tools.
 Moreover, from the European Commission in 2007 until 20011, there were the
 QualiPSo project that aims to provide to FOSS users, developers, and consumers,
 quality resources and expertise on the various topics related to FOSS. The
-QualiPSo project also have plained to develop a platform called QualiPSo
+QualiPSo project also had planned to develop a platform called QualiPSo
 Factory but it was not fully completed.
 
 In Latin American has an initiative based on the SPB project called Software
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