diff --git a/src/spell.c b/src/spell.c
index e558a99..20344f2 100644
--- a/src/spell.c
+++ b/src/spell.c
@@ -9054,6 +9054,9 @@
     {
 	buf->b_spell = TRUE;
 	buf->b_p_swf = TRUE;	/* may create a swap file */
+#ifdef FEAT_CRYPT
+	buf->b_p_key = empty_option;
+#endif
 	ml_open(buf);
 	ml_open_file(buf);	/* create swap file now */
     }