Nowadays, the ERP systems (Enterprise Resource Planning) have an important presence in most industries due to the benefits they offer, in this way, it is critical their acceptance and use by the end users. The main goal of this study is to determine the factors that influence the intention to use ERP systems, employing the model UTAUT (Unified Theory of Acceptance and Use of Technology) as a theoretical base. Also the Confirmatory Factor Analysis (CFA) with a sample of 121 end users was used to validate the proposed extended model. The results show that the intended use of ERP systems was significantly influenced by training in problem solving and adaptation to local government regulation, in that order of importance.