diff --git a/media/libstagefright/matroska/MatroskaExtractor.cpp b/media/libstagefright/matroska/MatroskaExtractor.cpp
index 7fc7037..b304749 100644
--- a/media/libstagefright/matroska/MatroskaExtractor.cpp
+++ b/media/libstagefright/matroska/MatroskaExtractor.cpp
@@ -263,8 +263,8 @@
                     mCluster, nextCluster, pos, len);
             ALOGV("ParseNext returned %ld", res);
 
-            if (res > 0) {
-                // EOF
+            if (res != 0) {
+                // EOF or error
 
                 mCluster = NULL;
                 break;