diff --git a/dlls/cryptui/main.c b/dlls/cryptui/main.c
index 339ad61d4bc..3a8f8f809e9 100644
--- a/dlls/cryptui/main.c
+++ b/dlls/cryptui/main.c
@@ -4040,8 +4040,8 @@ static void show_cert_chain(HWND hwnd, struct hierarchy_data *data)
             tvis.u.item.pszText = name;
             tvis.u.item.state = TVIS_EXPANDED;
             tvis.u.item.stateMask = TVIS_EXPANDED;
-            if (i == 1 &&
-             (provSigner->pChainContext->TrustStatus.dwErrorStatus &
+            if (i == 1 && (!provSigner->pChainContext ||
+             provSigner->pChainContext->TrustStatus.dwErrorStatus &
              CERT_TRUST_IS_PARTIAL_CHAIN))
             {
                 /* The root of the chain has a special case:  if the chain is