diff --git a/lib/fpm/package/deb.rb b/lib/fpm/package/deb.rb
index 0d536528f..c890563f8 100644
--- a/lib/fpm/package/deb.rb
+++ b/lib/fpm/package/deb.rb
@@ -49,7 +49,7 @@ class FPM::Package::Deb < FPM::Package
     (?:-[A-Za-z0-9+~.]+)?  # debian_revision
   /x # Version field pattern
   RELATIONSHIP_FIELD_PATTERN = /^
-    (?<name>[A-z0-9][A-z0-9_.-]+)
+    (?<name>[A-z0-9][A-z0-9+.-]+)
     (?:\s*\((?<relation>[<>=]+)\s(?<version>#{VERSION_FIELD_PATTERN})\))?
   $/x # Relationship field pattern
 
@@ -733,7 +733,7 @@ def converted_from(origin)
         else
           # Also replace '::' in the perl module name with '-'
           modulename = m["name"].gsub("::", "-")
-         
+
           # Fix any upper-casing or other naming concerns Debian has about packages
           name = "#{attributes[:cpan_package_name_prefix]}-#{modulename}"