diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index de63198e..9d78ce07 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -74,7 +74,7 @@ ea__find(ea_list *e, unsigned id)
       if (e->flags & EALF_BISECT)
 	{
 	  l = 0;
-	  r = e->count + 1;
+	  r = e->count - 1;
 	  while (l <= r)
 	    {
 	      m = (l+r) / 2;