diff --git a/test/json/fixtures/pass1.json b/test/json/fixtures/pass1.json
index 7828fcc13..fa9058b13 100644
--- a/test/json/fixtures/pass1.json
+++ b/test/json/fixtures/pass1.json
@@ -12,7 +12,7 @@
         "real": -9876.543210,
         "e": 0.123456789e-12,
         "E": 1.234567890E+34,
-        "":  23456789012E666,
+        "":  23456789012E66,
         "zero": 0,
         "one": 1,
         "space": " ",
diff --git a/test/json/json_parser_test.rb b/test/json/json_parser_test.rb
index 6455d2971..3c60fec87 100644
--- a/test/json/json_parser_test.rb
+++ b/test/json/json_parser_test.rb
@@ -128,6 +128,7 @@ def test_parse_numbers
     assert_equal(1.0/0, parse('Infinity', :allow_nan => true))
     assert_raise(ParserError) { parse('-Infinity') }
     assert_equal(-1.0/0, parse('-Infinity', :allow_nan => true))
+    capture_output { assert_equal(Float::INFINITY, parse("23456789012E666")) }
   end
 
   def test_parse_bigdecimals