diff --git a/scripts/stack_core.py b/scripts/stack_core.py
index 69c4e1f6f..963f7d5c1 100755
--- a/scripts/stack_core.py
+++ b/scripts/stack_core.py
@@ -195,6 +195,7 @@ class TraceConverter:
       match = self.sanitizer_trace_line.match(line)
       return {"frame": match.group("frame"),
               "offset": match.group("offset"),
+              "so_offset": None,
               "dso": match.group("dso"),
               "symbol_present": False,
               "symbol_name": None}