diff --git a/test/test_utils.py b/test/test_utils.py
index ca6d832a4..5aa10e0ac 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -1237,7 +1237,7 @@ part 3</font></u>
 4
 00:00:09,560 --> 00:00:12,359
 <i><u><font color="yellow"><font color="lime">inner
- </font>style</font></u></i>
+</font>style</font></u></i>
 
 '''
         self.assertEqual(dfxp2srt(dfxp_data_with_style), srt_data)
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 71713f63a..79d17cd12 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -2831,7 +2831,7 @@ def dfxp2srt(dfxp_data):
                     self._applied_styles.pop()
 
         def data(self, data):
-            self._out += data
+            self._out += data.strip()
 
         def close(self):
             return self._out.strip()