diff --git a/lib/mutations/integer_filter.rb b/lib/mutations/integer_filter.rb
index 4b88b1a..d50ef51 100644
--- a/lib/mutations/integer_filter.rb
+++ b/lib/mutations/integer_filter.rb
@@ -25,8 +25,12 @@ def filter(data)
 
       # Ensure it's the correct data type (Integer)
       if !data.is_a?(Integer)
-        if data.is_a?(String) && data =~ /^-?\d/
-          data = data.to_i
+        if data.is_a?(String)
+          begin
+            data = Integer(data)
+          rescue ArgumentError
+            return [data, :integer]
+          end
         else
           return [data, :integer]
         end
diff --git a/spec/integer_filter_spec.rb b/spec/integer_filter_spec.rb
index 5b690c2..db9f216 100644
--- a/spec/integer_filter_spec.rb
+++ b/spec/integer_filter_spec.rb
@@ -25,7 +25,7 @@
 
   it "doesnt't allow other strings, nor does it allow random objects or symbols" do
     f = Mutations::IntegerFilter.new
-    ["zero","a1", {}, [], Object.new, :d].each do |thing|
+    ["zero", "6iamnotanumber", "a1", {}, [], Object.new, :d].each do |thing|
       _filtered, errors = f.filter(thing)
       assert_equal :integer, errors
     end