diff --git a/android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/IjkMediaPlayer.java b/android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/IjkMediaPlayer.java
index b01aa49108..79a129fed7 100755
--- a/android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/IjkMediaPlayer.java
+++ b/android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/IjkMediaPlayer.java
@@ -425,7 +425,7 @@ public void setDataSource(String path, Map<String, String> headers)
             StringBuilder sb = new StringBuilder();
             for(Map.Entry<String, String> entry: headers.entrySet()) {
                 sb.append(entry.getKey());
-                sb.append(":");
+                sb.append(": ");
                 String value = entry.getValue();
                 if (!TextUtils.isEmpty(value))
                     sb.append(entry.getValue());