1 files changed, 1 insertions, 0 deletions

diff --git a/src/eval.c b/src/eval.c
index eff50a4de52..be582775fea 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -768,6 +768,7 @@ The return value is BASE-VARIABLE.  */)
   }
 
   sym->declared_special = 1;
+  XSYMBOL (base_variable)->declared_special = 1;
   sym->redirect = SYMBOL_VARALIAS;
   SET_SYMBOL_ALIAS (sym, XSYMBOL (base_variable));
   sym->constant = SYMBOL_CONSTANT_P (base_variable);