diff --git a/src/views/wpm/mlog6_form.vue b/src/views/wpm/mlog6_form.vue
index 99f7d990..0dfee290 100644
--- a/src/views/wpm/mlog6_form.vue
+++ b/src/views/wpm/mlog6_form.vue
@@ -729,7 +729,7 @@ export default {
 		countUseChange(){
 			if(this.form.count_real>this.form.count_use){
 				this.form.count_real = this.form.count_use;
-				this.count_ok = this.form.count_real - this.form.count_notok;
+				this.form.count_ok = this.form.count_use - this.form.count_notok;
 			}
 		},
 		countNotOkSun() {