diff --git a/src/searchers.py b/src/searchers.py
index 567235b..18e9b47 100644
--- a/src/searchers.py
+++ b/src/searchers.py
@@ -116,8 +116,8 @@ def exec_search(self,
                     is_exact_search: bool,
                     ignore_signature_match: bool,
                     force_rematch: bool,
-                    reference_date: datetime,
-                    department: str):
+                    department: str,                    
+                    reference_date: datetime):
         search_results = self._search_all_terms(
             self._cast_term_list(term_list),
             dou_sections,
@@ -160,7 +160,9 @@ def _search_all_terms(self,
                 results = [r for r in results
                            if self._really_matched(search_term,
                                                    r.get('abstract'))]
-            self._department_matched(results, department)
+            if department:
+                results = [r for r in results
+                           if department in r.get('hierarchyList')]                
                 
             self._render_section_descriptions(results)
 
@@ -244,16 +246,6 @@ def _is_signature(self, search_term: str, abstract: str) -> bool:
                 # ' JOSÉ `ANTONIO DE OLIVEIRA` MATOS'
                 norm_abstract_without_start_name.startswith(norm_term))
         )
-    
-    def _department_matched(self, results: list, department: str) -> list:
-            """Verifica se o termo encontrado pela API realmente é igual ao
-            órgão de busca. Esta função é útil para filtrar resultados
-            retornardos pela API, mas que são específicas do órgão.
-            """
-
-            for result in results[:]:
-                if not department in result["hierarchyList"]:
-                    results.remove(result)
 
     def _get_prior_and_matched_name(self, raw_html: str) -> Tuple[str, str]:
         groups = self.SPLIT_MATCH_RE.match(raw_html).groups()