diff --git a/cfonb.gemspec b/cfonb.gemspec
index 9949e72..b375876 100644
--- a/cfonb.gemspec
+++ b/cfonb.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name                       = 'cfonb'
-  s.version                    = '1.0.0'
+  s.version                    = '1.0.1'
   s.required_ruby_version      = '>= 3.2'
   s.summary                    = 'CFONB parser'
   s.description                = 'An easy to use CFONB format parser'
diff --git a/lib/cfonb/operation_details/ibe.rb b/lib/cfonb/operation_details/ibe.rb
index ad8b8b6..a39211b 100644
--- a/lib/cfonb/operation_details/ibe.rb
+++ b/lib/cfonb/operation_details/ibe.rb
@@ -7,7 +7,7 @@ class IBE < Base
 
       def self.apply(details, line)
         details.creditor_identifier = line.detail[0..34].strip
-        details.creditor_identifier_type = line.detail[35..-1].strip
+        details.creditor_identifier_type = line.detail[35..-1]&.strip
       end
 
       CFONB::OperationDetails.register('IBE', self)
diff --git a/lib/cfonb/operation_details/ipy.rb b/lib/cfonb/operation_details/ipy.rb
index 754f0d1..53b1713 100644
--- a/lib/cfonb/operation_details/ipy.rb
+++ b/lib/cfonb/operation_details/ipy.rb
@@ -7,7 +7,7 @@ class IPY < Base
 
       def self.apply(details, line)
         details.debtor_identifier = line.detail[0..34].strip
-        details.debtor_identifier_type = line.detail[35..-1].strip
+        details.debtor_identifier_type = line.detail[35..-1]&.strip
       end
 
       CFONB::OperationDetails.register('IPY', self)