diff --git a/scripts/checkstack.py b/scripts/checkstack.py
index d4f58cf3..cbeb415d 100755
--- a/scripts/checkstack.py
+++ b/scripts/checkstack.py
@@ -172,6 +172,9 @@ def main():
             if '+' in ref:
                 # Inter-function jump.
                 pass
+            elif insn.startswith('ld') or insn.startswith('st'):
+                # memory access
+                pass
             elif insn in ('rjmp', 'jmp', 'brne', 'brcs'):
                 # Tail call
                 cur.noteCall(insnaddr, calladdr, 0)