diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 250050e..e83c6d6 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -1789,7 +1789,7 @@
 	 * overwrite a user's viminfo file after a "su root", with a
 	 * viminfo file that the user can't read.
 	 */
-	st_old.st_dev = 0;
+	st_old.st_dev = (dev_t)0;
 	st_old.st_ino = 0;
 	st_old.st_mode = 0600;
 	if (mch_stat((char *)fname, &st_old) == 0
@@ -3715,7 +3715,7 @@
     /* If the window options were changed may need to set the spell language.
      * Can only do this after the buffer has been properly setup. */
     if (did_get_winopts && curwin->w_p_spell && *curbuf->b_p_spl != NUL)
-	did_set_spelllang(curbuf);
+	(void)did_set_spelllang(curbuf);
 #endif
 
     if (command == NULL)
@@ -3788,7 +3788,7 @@
 
 #ifdef FEAT_KEYMAP
     if (curbuf->b_kmap_state & KEYMAP_INIT)
-	keymap_init();
+	(void)keymap_init();
 #endif
 
     --RedrawingDisabled;