diff --git a/.clang-tidy b/.clang-tidy
index 4ae3f8f..6569cc4 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -216,6 +216,7 @@
 performance-implicit-conversion-in-loop,
 performance-inefficient-algorithm,
 performance-inefficient-string-concatenation,
+performance-inefficient-vector-operation,
 performance-move-const-arg,
 performance-move-constructor-init,
 performance-no-automatic-move,
diff --git a/src/utils.cpp b/src/utils.cpp
index 9d32f3b..3b611d7 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -113,6 +113,7 @@
             throw std::runtime_error("Error reading mapper response");
         }
         std::vector<std::string> ret;
+        ret.reserve(mapperResponse.size());
         for (const auto& i : mapperResponse)
         {
             ret.emplace_back(i.first);