diff --git a/src/codecs/positioncodec.cpp b/src/codecs/positioncodec.cpp
--- a/src/codecs/positioncodec.cpp
+++ b/src/codecs/positioncodec.cpp
@@ -54,6 +54,9 @@
         info.docId = decodeFixed64(data);
         data += sizeof(quint64);
         data = getDifferentialVarInt32(data, end, &info.positions);
+        if (!data) {
+            return QVector<PositionInfo>();
+        }
 
         vec << info;
     }