1 files changed, 2 insertions, 0 deletions

diff --git a/src/minibuf.c b/src/minibuf.c
index c2df83253fd..ab95b5f0a46 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -1311,6 +1311,8 @@ is used to further constrain the set of candidates.  */)
         {
           if (!EQ (bucket, zero))
             {
+              if (!SYMBOLP (bucket))
+                error ("Bad data in guts of obarray");
               elt = bucket;
               eltstring = elt;
               if (XSYMBOL (bucket)->next)