diff --git a/lib/rexml/parsers/streamparser.rb b/lib/rexml/parsers/streamparser.rb
index b271e6743e..f6a8bfa802 100644
--- a/lib/rexml/parsers/streamparser.rb
+++ b/lib/rexml/parsers/streamparser.rb
@@ -7,6 +7,7 @@ module REXML
       def initialize source, listener
         @listener = listener
         @parser = BaseParser.new( source )
+        @tag_stack = []
       end
 
       def add_listener( listener )
@@ -19,14 +20,21 @@ module REXML
           event = @parser.pull
           case event[0]
           when :end_document
+            unless @tag_stack.empty?
+              tag_path = "/" + @tag_stack.join("/")
+              raise ParseException.new("Missing end tag for '#{tag_path}'",
+                                       @parser.source)
+            end
             return
           when :start_element
+            @tag_stack << event[1]
             attrs = event[2].each do |n, v|
               event[2][n] = @parser.unnormalize( v )
             end
             @listener.tag_start( event[1], attrs )
           when :end_element
             @listener.tag_end( event[1] )
+            @tag_stack.pop
           when :text
             normalized = @parser.unnormalize( event[1] )
             @listener.text( normalized )
diff --git a/test/rexml/parser/test_stream.rb b/test/rexml/parser/test_stream.rb
new file mode 100644
index 0000000000..c315833e4b
--- /dev/null
+++ b/test/rexml/parser/test_stream.rb
@@ -0,0 +1,32 @@
+require "test/unit"
+require "rexml/document"
+require "rexml/streamlistener"
+
+module REXMLTests
+  class TestStreamParser < Test::Unit::TestCase
+    class NullListener
+      include REXML::StreamListener
+    end
+
+    class TestInvalid < self
+      def test_no_end_tag
+        xml = "<root><sub>"
+        exception = assert_raise(REXML::ParseException) do
+          parse(xml)
+        end
+        assert_equal(<<-MESSAGE, exception.to_s)
+Missing end tag for '/root/sub'
+Line: 1
+Position: #{xml.bytesize}
+Last 80 unconsumed characters:
+        MESSAGE
+      end
+
+      private
+      def parse(xml, listener=nil)
+        listener ||= NullListener.new
+        REXML::Document.parse_stream(xml, listener)
+      end
+    end
+  end
+end