diff --git a/lisp/loadup.el b/lisp/loadup.el
index 081f967662c..3889786a7eb 100644
--- a/lisp/loadup.el
+++ b/lisp/loadup.el
@@ -70,6 +70,8 @@
 (load "language/english")
 (load "language/ethiopic")
 (load "language/european")
+(load "language/czech")
+(load "language/slovak")
 (load "language/greek")
 (load "language/hebrew")
 (load "language/japanese")