diff --git a/lib/KOReaderSync/KOReaderDocumentId.cpp b/lib/KOReaderSync/KOReaderDocumentId.cpp
index 2c52464c..b33beb75 100644
--- a/lib/KOReaderSync/KOReaderDocumentId.cpp
+++ b/lib/KOReaderSync/KOReaderDocumentId.cpp
@@ -33,10 +33,10 @@ std::string KOReaderDocumentId::calculateFromFilename(const std::string& filePat
 
 size_t KOReaderDocumentId::getOffset(int i) {
   // Offset = 1024 << (2*i)
-  // For i = -1: 1024 >> 2 = 256
+  // For i = -1: KOReader uses a value of 0
   // For i >= 0: 1024 << (2*i)
   if (i < 0) {
-    return CHUNK_SIZE >> (-2 * i);
+    return 0;
   }
   return CHUNK_SIZE << (2 * i);
 }