diff --git a/src/spell.c b/src/spell.c
index 99e030f..dab6aea 100644
--- a/src/spell.c
+++ b/src/spell.c
@@ -183,7 +183,7 @@
     if (wp->w_s->b_langp.ga_len == 0)
 	return 1;
 
-    vim_memset(&mi, 0, sizeof(matchinf_T));
+    CLEAR_FIELD(mi);
 
     // A number is always OK.  Also skip hexadecimal numbers 0xFF99 and
     // 0X99FF.  But always do check spelling to find "3GPP" and "11
@@ -2274,7 +2274,7 @@
     static void
 clear_midword(win_T *wp)
 {
-    vim_memset(wp->w_s->b_spell_ismw, 0, 256);
+    CLEAR_FIELD(wp->w_s->b_spell_ismw);
     VIM_CLEAR(wp->w_s->b_spell_ismw_mb);
 }
 
@@ -2520,9 +2520,9 @@
 {
     int		i;
 
-    // Init everything to FALSE.
-    vim_memset(sp->st_isw, FALSE, sizeof(sp->st_isw));
-    vim_memset(sp->st_isu, FALSE, sizeof(sp->st_isu));
+    // Init everything to FALSE (zero).
+    CLEAR_FIELD(sp->st_isw);
+    CLEAR_FIELD(sp->st_isu);
     for (i = 0; i < 256; ++i)
     {
 	sp->st_fold[i] = i;