diff --git a/src/evalfunc.c b/src/evalfunc.c
index e30186b..da8f845 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -9060,7 +9060,7 @@
 	// If it's still empty it was changed and restored, need to restore in
 	// the complicated way.
 	if (*p_cpo == NUL)
-	    set_option_value((char_u *)"cpo", 0L, save_cpo, 0);
+	    set_option_value_give_err((char_u *)"cpo", 0L, save_cpo, 0);
 	free_string_option(save_cpo);
     }