diff --git a/lib/census_api.rb b/lib/census_api.rb
index 066c0be95..931781c6d 100644
--- a/lib/census_api.rb
+++ b/lib/census_api.rb
@@ -119,7 +119,7 @@ class CensusApi
       {get_habita_datos_response: {get_habita_datos_return: {datos_habitante: {}, datos_vivienda: {}}}}
     end
 
-    def is_dni?(document_type)
+    def dni?(document_type)
       document_type.to_s == "1"
     end
 
diff --git a/lib/document_parser.rb b/lib/document_parser.rb
index c60b180dc..9e59c6b75 100644
--- a/lib/document_parser.rb
+++ b/lib/document_parser.rb
@@ -5,7 +5,7 @@ module DocumentParser
     document_number = document_number.to_s.gsub(/[^0-9A-Za-z]/i, '')
     variants = []
 
-    if is_dni?(document_type)
+    if dni?(document_type)
       document_number, letter = split_letter_from(document_number)
       number_variants = get_number_variants_with_leading_zeroes_from(document_number)
       letter_variants = get_letter_variants(number_variants, letter)
diff --git a/lib/local_census.rb b/lib/local_census.rb
index 6c6e8fe12..1a0428787 100644
--- a/lib/local_census.rb
+++ b/lib/local_census.rb
@@ -63,7 +63,7 @@ class LocalCensus
       LocalCensusRecord.find_by(document_type: document_type, document_number: document_number)
     end
 
-    def is_dni?(document_type)
+    def dni?(document_type)
       document_type.to_s == "1"
     end