diff --git a/src/coreclr/jit/sideeffects.cpp b/src/coreclr/jit/sideeffects.cpp
index 5b642529c62f57..8c640633921fb0 100644
--- a/src/coreclr/jit/sideeffects.cpp
+++ b/src/coreclr/jit/sideeffects.cpp
@@ -318,6 +318,19 @@ void AliasSet::AddNode(Compiler* compiler, GenTree* node)
     if (nodeInfo.IsLclVarWrite())
     {
         m_lclVarWrites.Add(compiler, nodeInfo.LclNum());
+
+        LclVarDsc* dsc = compiler->lvaGetDesc(nodeInfo.LclNum());
+        if (dsc->lvIsStructField)
+        {
+            m_lclVarWrites.Add(compiler, dsc->lvParentLcl);
+        }
+        else if (dsc->lvPromoted)
+        {
+            for (unsigned i = 0; i < dsc->lvFieldCnt; i++)
+            {
+                m_lclVarWrites.Add(compiler, dsc->lvFieldLclStart + i);
+            }
+        }
     }
 }