diff --git a/contrib/llvm/projects/libunwind/include/unwind.h b/contrib/llvm/projects/libunwind/include/unwind.h
index 94880bfebae..1fc3c5ce312 100644
--- a/contrib/llvm/projects/libunwind/include/unwind.h
+++ b/contrib/llvm/projects/libunwind/include/unwind.h
@@ -128,7 +128,7 @@ struct _Unwind_Exception {
   // added for binary compatibility.
   uint32_t reserved[3];
 #endif
-};
+} __attribute__((__aligned__));
 
 typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
     (int version,