diff --git a/lib/verify/specfile.rb b/lib/verify/specfile.rb
index cc2ddbd17..01c3bc112 100644
--- a/lib/verify/specfile.rb
+++ b/lib/verify/specfile.rb
@@ -39,17 +39,19 @@ module Vulcano
         src = __get_block_source(&r.instance_variable_get(:@__block))
       end
       r.instance_variable_set(:@__code, src)
-      fid = VulcanoBaseRule.full_id r, @profile_id
-      if @rules[fid].nil?
-        @rules[fid] = r
+
+      full_id = VulcanoBaseRule.full_id @profile_id, r
+      if @rules[full_id].nil?
+        @rules[full_id] = r
       else
         @errors.push "Duplicate definition of rule #{fid}."
       end
     end
+
     def __unregister_rule id
-      fid = "#{@profile_id}/#{id}"
-      if @rules.key? fid
-        @rules.delete(fid)
+      full_id = VulcanoBaseRule.full_id @profile_id, id
+      if @rules.key?(full_id)
+        @rules.delete(full_id)
       else
         @errors.push "Failed to skip rule #{fid}, it isn't defined."
       end
diff --git a/lib/vulcano/base_rule.rb b/lib/vulcano/base_rule.rb
index 9069eafd0..8082c74e7 100644
--- a/lib/vulcano/base_rule.rb
+++ b/lib/vulcano/base_rule.rb
@@ -65,20 +65,28 @@ class VulcanoBaseRule
   # for the rule. If the rule's profile id is empty,
   # the given profile_id will be used instead and also
   # set for the rule.
-  def self.full_id rule, profile_id
-    # As the profile context is exclusively pulled with a
-    # profile ID, attach it to the rule if necessary.
-    rid = rule.instance_variable_get(:@id)
-    if rid.nil?
-      # TODO: Message about skipping this rule
-      # due to missing ID
-      return nil
+  def self.full_id profile_id, rule
+    if rule.is_a?(String) or rule.nil?
+      rid = rule
+    else
+      # As the profile context is exclusively pulled with a
+      # profile ID, attach it to the rule if necessary.
+      rid = rule.instance_variable_get(:@id)
+      if rid.nil?
+        # TODO: Message about skipping this rule
+        # due to missing ID
+        return nil
+      end
     end
     pid = rule.instance_variable_get(:@profile_id)
     if pid.nil?
       rule.instance_variable_set(:@profile_id, profile_id)
       pid = profile_id
     end
-    return (pid || '') + "/" + rid
+    if pid.nil? or pid.empty?
+      return rid
+    else
+      return "#{pid}/#{rid}"
+    end
   end
 end
diff --git a/lib/vulcano/rule.rb b/lib/vulcano/rule.rb
index 6cc0494a7..8788d71fa 100644
--- a/lib/vulcano/rule.rb
+++ b/lib/vulcano/rule.rb
@@ -191,13 +191,13 @@ module Vulcano
     end
 
     def __unregister_rule id
-      full_id = "#{@profile_id}/#{id}"
+      full_id = VulcanoBaseRule::full_id(@profile_id, id)
       @rules[full_id] = nil
     end
 
     def __register_rule r
       # get the full ID
-      full_id = VulcanoBaseRule::full_id(r, @profile_id)
+      full_id = VulcanoBaseRule::full_id(@profile_id, r)
       if full_id.nil?
         # TODO error
         return