diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 1c1ecaa..fa94424 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -227,6 +227,7 @@
 # define ex_syntax		ex_ni
 # define ex_spell		ex_ni
 # define ex_mkspell		ex_ni
+# define ex_spelldump		ex_ni
 #endif
 #ifndef FEAT_MZSCHEME
 # define ex_mzscheme		ex_script_ni