diff --git a/lib/mihari.rb b/lib/mihari.rb
index 2655300a5..5d56e226f 100644
--- a/lib/mihari.rb
+++ b/lib/mihari.rb
@@ -55,6 +55,7 @@
 require "mihari/concerns/configurable"
 require "mihari/concerns/database_connectable"
 require "mihari/concerns/error_unwrappable"
+require "mihari/concerns/falsepositive_normalizable"
 require "mihari/concerns/falsepositive_validatable"
 require "mihari/concerns/refangable"
 require "mihari/concerns/retriable"
diff --git a/lib/mihari/concerns/falsepositive_normalizable.rb b/lib/mihari/concerns/falsepositive_normalizable.rb
new file mode 100644
index 000000000..5aac3836d
--- /dev/null
+++ b/lib/mihari/concerns/falsepositive_normalizable.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+module Mihari
+  module Concerns
+    #
+    # False positive normalizable concern
+    #
+    module FalsePositiveNormalizable
+      extend ActiveSupport::Concern
+
+      prepend MemoWise
+
+      #
+      # Normalize a falsepositive value
+      #
+      # @param [String] value
+      #
+      # @return [String, Regexp]
+      #
+      def normalize_falsepositive(value)
+        return value if !value.start_with?("/") || !value.end_with?("/")
+
+        # if a value is surrounded by slashes, take it as a regexp
+        value_without_slashes = value[1..-2]
+        Regexp.compile value_without_slashes.to_s
+      end
+      memo_wise :normalize_falsepositive
+    end
+  end
+end
diff --git a/lib/mihari/concerns/falsepositive_validatable.rb b/lib/mihari/concerns/falsepositive_validatable.rb
index 405d5b5b4..7a09fbc24 100644
--- a/lib/mihari/concerns/falsepositive_validatable.rb
+++ b/lib/mihari/concerns/falsepositive_validatable.rb
@@ -8,23 +8,7 @@ module Concerns
     module FalsePositiveValidatable
       extend ActiveSupport::Concern
 
-      prepend MemoWise
-
-      #
-      # Normalize a falsepositive value
-      #
-      # @param [String] value
-      #
-      # @return [String, Regexp]
-      #
-      def normalize_falsepositive(value)
-        return value if !value.start_with?("/") || !value.end_with?("/")
-
-        # if a value is surrounded by slashes, take it as a regexp
-        value_without_slashes = value[1..-2]
-        Regexp.compile value_without_slashes.to_s
-      end
-      memo_wise :normalize_falsepositive
+      include FalsePositiveNormalizable
 
       #
       # Check whether a value is valid format as a disallowed data value