1 files changed, 1 insertions, 1 deletions

diff --git a/src/keymap.c b/src/keymap.c
index 6d0f9e5c058..24f3daa6549 100644
--- a/src/keymap.c
+++ b/src/keymap.c
@@ -464,7 +464,7 @@ is not copied.")
 
           for (i = 0; i < XVECTOR (elt)->size; i++)
             if (XTYPE (XVECTOR (elt)->contents[i]) != Lisp_Symbol
-                && Fkeymapp (XVECTOR (elt)->contents[i]))
+                && ! NILP (Fkeymapp (XVECTOR (elt)->contents[i])))
               XVECTOR (elt)->contents[i] =
                 Fcopy_keymap (XVECTOR (elt)->contents[i]);
         }