diff --git a/src/option.c b/src/option.c
index 86e4757..a36f8c0 100644
--- a/src/option.c
+++ b/src/option.c
@@ -1652,7 +1652,7 @@
 #endif
 #endif
 				(char_u *)0L} SCRIPTID_INIT},
-    {"langmap",     "lmap", P_STRING|P_VI_DEF|P_COMMA|P_NODUP,
+    {"langmap",     "lmap", P_STRING|P_VI_DEF|P_COMMA|P_NODUP|P_SECURE,
 #ifdef FEAT_LANGMAP
 			    (char_u *)&p_langmap, PV_NONE,
 			    {(char_u *)"",	/* unmatched } */