diff --git a/lib/fastimage.rb b/lib/fastimage.rb
index 69c30dd..1096dfa 100644
--- a/lib/fastimage.rb
+++ b/lib/fastimage.rb
@@ -200,8 +200,6 @@ class FastImage
       end
     end
 
-    uri.rewind if uri.respond_to?(:rewind)
-
     raise SizeNotFound if @options[:raise_on_failure] && @property == :size && !@size
 
   rescue Timeout::Error, SocketError, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ECONNRESET,
@@ -220,6 +218,9 @@ class FastImage
       end
     end
 
+  ensure
+    uri.rewind if uri.respond_to?(:rewind)
+
   end
 
   private
diff --git a/test/test.rb b/test/test.rb
index 7769a80..7538194 100644
--- a/test/test.rb
+++ b/test/test.rb
@@ -292,6 +292,18 @@ class FastImageTest < Test::Unit::TestCase
     end
   end
 
+  def test_should_rewind_ios
+    string = File.read(File.join(FixturePath, "test.bmp"))
+    stringio = StringIO.new(string)
+    FastImage.type(stringio)
+    assert_equal 0, stringio.pos
+
+    string = File.read(File.join(FixturePath, "test.xml"))
+    stringio = StringIO.new(string)
+    FastImage.type(stringio)
+    assert_equal 0, stringio.pos
+  end
+
   def test_gzipped_file
     url = "http://example.nowhere/#{GzipTestImg}"
     assert_equal([970, 450], FastImage.size(url))