diff --git a/qiling/os/memory.py b/qiling/os/memory.py
index a2f01a2f8..aeb514bda 100644
--- a/qiling/os/memory.py
+++ b/qiling/os/memory.py
@@ -286,6 +286,9 @@ def restore(self, mem_dict):
         """Restore saved memory content.
         """
 
+        # Unmap everything so we start with a clean memory state.
+        self.unmap_all()
+
         for lbound, ubound, perms, label, data in mem_dict['ram']:
             self.ql.log.debug(f'restoring memory range: {lbound:#08x} {ubound:#08x} {label}')