diff --git a/xkb/xkbUtils.c b/xkb/xkbUtils.c
index 1d2366756..bb6d8a0ae 100644
--- a/xkb/xkbUtils.c
+++ b/xkb/xkbUtils.c
@@ -1140,6 +1140,9 @@ XkbCopyKeymap(XkbDescPtr src, XkbDescPtr dst, Bool sendNotifies)
                     dtype->preserve = NULL;
                 }
             }
+
+            dst->map->size_types = src->map->num_types;
+            dst->map->num_types = src->map->num_types;
         }
         else {
             if (dst->map->types) {
@@ -1155,9 +1158,9 @@ XkbCopyKeymap(XkbDescPtr src, XkbDescPtr dst, Bool sendNotifies)
                 xfree(dst->map->types);
                 dst->map->types = NULL;
             }
+            dst->map->num_types = 0;
+            dst->map->size_types = 0;
         }
-        dst->map->size_types = src->map->num_types;
-        dst->map->num_types = src->map->num_types;
 
         if (src->map->modmap) {
             if (src->max_key_code != dst->max_key_code) {