diff --git a/resource/infrast.json b/resource/infrast.json
index be61c70818..75818fe6a0 100644
--- a/resource/infrast.json
+++ b/resource/infrast.json
@@ -2991,7 +2991,7 @@
                 ]
             },
             {
-                "allowExternal": true,
+                "allowExternal": false,
                 "desc": "巫恋组",
                 "necessary": [
                     {
@@ -3182,4 +3182,4 @@
         "Dorm",
         "Mfg"
     ]
-}
\ No newline at end of file
+}
diff --git a/src/MeoAssistant/InfrastProductionTask.cpp b/src/MeoAssistant/InfrastProductionTask.cpp
index d0a6bdca85..d38922566a 100644
--- a/src/MeoAssistant/InfrastProductionTask.cpp
+++ b/src/MeoAssistant/InfrastProductionTask.cpp
@@ -471,10 +471,10 @@ bool asst::InfrastProductionTask::optimal_calc()
         if (cur_combs.size() < cur_max_num_of_opers) {
             // 允许外部的话，就把单个干员凑进来
             if (group.allow_external) {
-                for (size_t i = cur_combs.size(); i != cur_max_num_of_opers; ++i) {
-                    size_t index = i - cur_combs.size();
-                    cur_combs.emplace_back(cur_available_opers.at(index));
-                    cur_efficient += cur_available_opers.at(index).efficient.at(m_product);
+                for (size_t index = 0; index < cur_max_num_of_opers - cur_combs.size(); ++index) {
+                    const auto& comb = cur_available_opers.at(index);
+                    cur_combs.emplace_back(comb);
+                    cur_efficient += comb.efficient.at(m_product);
                 }
             }
             else { // 否则这个组合人不够，就不可用了