diff --git a/media/libstagefright/codecs/vorbis/dec/SoftVorbis.cpp b/media/libstagefright/codecs/vorbis/dec/SoftVorbis.cpp
index 76a400c..8d0ea3a 100644
--- a/media/libstagefright/codecs/vorbis/dec/SoftVorbis.cpp
+++ b/media/libstagefright/codecs/vorbis/dec/SoftVorbis.cpp
@@ -572,16 +572,17 @@
 }
 
 void SoftVorbis::onPortFlushCompleted(OMX_U32 portIndex) {
-    if (portIndex == 0 && mState != NULL) {
-        // Make sure that the next buffer output does not still
-        // depend on fragments from the last one decoded.
-
+    if (portIndex == 0) {
         mInputBufferCount = 0;
         mNumFramesOutput = 0;
         mSawInputEos = false;
         mSignalledOutputEos = false;
         mNumFramesLeftOnPage = -1;
-        vorbis_dsp_restart(mState);
+        if (mState != NULL) {
+            // Make sure that the next buffer output does not still
+            // depend on fragments from the last one decoded.
+            vorbis_dsp_restart(mState);
+        }
     }
 }
 
@@ -603,6 +604,7 @@
     mSawInputEos = false;
     mSignalledOutputEos = false;
     mSignalledError = false;
+    mNumFramesLeftOnPage = -1;
     mOutputPortSettingsChange = NONE;
 }