1 files changed, 8 insertions, 4 deletions

diff --git a/src/data.c b/src/data.c
index c6629dd5f29..1435cb03779 100644
--- a/src/data.c
+++ b/src/data.c
@@ -1501,10 +1501,14 @@ set_internal (Lisp_Object symbol, Lisp_Object newval, Lisp_Object where,
           {
             int offset = XBUFFER_OBJFWD (innercontents)->offset;
             int idx = PER_BUFFER_IDX (offset);
-            if (idx > 0
-                && bindflag == SET_INTERNAL_SET
-                && !let_shadows_buffer_binding_p (sym))
-              SET_PER_BUFFER_VALUE_P (buf, idx, 1);
+            if (idx > 0 && bindflag == SET_INTERNAL_SET
+                && !PER_BUFFER_VALUE_P (buf, idx))
+              {
+                if (let_shadows_buffer_binding_p (sym))
+                  set_default_internal (symbol, newval, bindflag);
+                else
+                  SET_PER_BUFFER_VALUE_P (buf, idx, 1);
+              }
           }
 
         if (voide)