diff --git a/lib/json_spec/memory.rb b/lib/json_spec/memory.rb
index df589c1..113146e 100644
--- a/lib/json_spec/memory.rb
+++ b/lib/json_spec/memory.rb
@@ -9,7 +9,7 @@ def memorize(key, value)
     end
 
     def remember(json)
-      memory.empty? ? json : json % memory
+      (memory.empty? or json.is_a?(Numeric)) ? json : json % memory
     end
 
     def forget
diff --git a/spec/json_spec/memory_spec.rb b/spec/json_spec/memory_spec.rb
index b644812..e248ae0 100644
--- a/spec/json_spec/memory_spec.rb
+++ b/spec/json_spec/memory_spec.rb
@@ -24,6 +24,11 @@
     JsonSpec.remember("foo%{bar}").should == "foobaz"
   end
 
+  it "ignores numeric types" do
+    JsonSpec.memorize(:bar, "baz")
+    JsonSpec.remember(10).should == 10
+  end
+
   it "forgets" do
     JsonSpec.memorize(:key, "value")
     JsonSpec.forget