diff --git a/libs/utils/BackupData.cpp b/libs/utils/BackupData.cpp
index f963058..8791263 100644
--- a/libs/utils/BackupData.cpp
+++ b/libs/utils/BackupData.cpp
@@ -285,7 +285,8 @@
             break;
         }
         default:
-            LOGD("Chunk header at %d has invalid type: 0x%08x", (int)m_pos, (int)m_header.type);
+            LOGD("Chunk header at %d has invalid type: 0x%08x",
+                    (int)(m_pos - sizeof(m_header)), (int)m_header.type);
             m_status = EINVAL;
     }