diff --git a/lib/validates_timeliness.rb b/lib/validates_timeliness.rb
index e1433c8..4989d41 100644
--- a/lib/validates_timeliness.rb
+++ b/lib/validates_timeliness.rb
@@ -62,5 +62,3 @@ module ValidatesTimeliness
 end
 
 ValidatesTimeliness.setup_for_rails
-
-ValidatesTimeliness::Formats.compile_format_expressions
diff --git a/lib/validates_timeliness/formats.rb b/lib/validates_timeliness/formats.rb
index a0000f2..5fcae45 100644
--- a/lib/validates_timeliness/formats.rb
+++ b/lib/validates_timeliness/formats.rb
@@ -316,3 +316,5 @@ module ValidatesTimeliness
     end
   end
 end
+
+ValidatesTimeliness::Formats.compile_format_expressions