diff --git a/include/backtrace/BacktraceMap.h b/include/backtrace/BacktraceMap.h
index 731c248..784bc03 100644
--- a/include/backtrace/BacktraceMap.h
+++ b/include/backtrace/BacktraceMap.h
@@ -37,6 +37,7 @@
 
   uintptr_t start;
   uintptr_t end;
+  uintptr_t offset;
   uintptr_t load_base;
   int flags;
   std::string name;