diff --git a/plugins/arclite/plugin.cpp b/plugins/arclite/plugin.cpp
index 4f635d31ac..11e5fafb6a 100644
--- a/plugins/arclite/plugin.cpp
+++ b/plugins/arclite/plugin.cpp
@@ -702,8 +702,10 @@ class Plugin
       });
       const auto error_log = std::make_shared<ErrorLog>();
       size_t im = 0, nm = matched_indices.size();
+      std::vector<UInt32> indices;
+      indices.reserve(nm);
       while (im < nm) {
-        std::vector<UInt32> indices;
+        indices.clear();
         auto parent = archive->file_list[matched_indices[im]].parent;
         while (im < nm && archive->file_list[matched_indices[im]].parent == parent)
           indices.push_back(matched_indices[im++]);
diff --git a/plugins/arclite/sfx.cpp b/plugins/arclite/sfx.cpp
index 9a4c927be2..d4ae71870c 100644
--- a/plugins/arclite/sfx.cpp
+++ b/plugins/arclite/sfx.cpp
@@ -352,7 +352,7 @@ class SfxOptionsDialog: public Far::Dialog {
   bool show() {
     label(Far::get_msg(MSG_SFX_OPTIONS_DLG_PROFILE));
     std::vector<std::wstring> profile_names;
-    profile_names.reserve(profiles.size());
+    profile_names.reserve(profiles.size() + 1);
     for (unsigned i = 0; i < profiles.size(); i++) {
       profile_names.push_back(profiles[i].name);
     }
diff --git a/plugins/arclite/ui.cpp b/plugins/arclite/ui.cpp
index 63ff30af16..f29e0b298d 100644
--- a/plugins/arclite/ui.cpp
+++ b/plugins/arclite/ui.cpp
@@ -1077,6 +1077,7 @@ class UpdateDialog: public Far::Dialog {
   void populate_profile_list() {
     DisableEvents de(*this);
     std::vector<FarListItem> fl_items;
+    fl_items.reserve(profiles.size() + 1);
     FarListItem fl_item{};
     for (unsigned i = 0; i < profiles.size(); i++) {
       fl_item.Text = profiles[i].name.c_str();
@@ -1280,7 +1281,7 @@ class UpdateDialog: public Far::Dialog {
         old_ext = ArcAPI::formats().at(m_options.arc_type).default_extension();
 
       std::vector<std::wstring> profile_names;
-      profile_names.reserve(profiles.size());
+      profile_names.reserve(profiles.size() + 1);
       unsigned profile_idx = static_cast<unsigned>(profiles.size());
       std::for_each(profiles.begin(), profiles.end(), [&] (const UpdateProfile& profile) {
         profile_names.push_back(profile.name);
@@ -1345,6 +1346,7 @@ class UpdateDialog: public Far::Dialog {
           return _wcsicmp(a_format.name.c_str(), b_format.name.c_str()) < 0;
       });
       std::vector<std::wstring> other_format_names;
+      other_format_names.reserve(other_formats.size());
       unsigned other_format_index = 0;
       bool found = false;
       for (const auto& t : other_formats) {
@@ -1378,9 +1380,11 @@ class UpdateDialog: public Far::Dialog {
     label(Far::get_msg(MSG_UPDATE_DLG_METHOD));
     std::wstring method = m_options.method.empty() && m_options.arc_type == c_7z? c_methods[0].value : m_options.method;
     std::vector<std::wstring> method_names;
+    const auto sizeMethods = ARRAYSIZE(c_methods) + ArcAPI::Count7zCodecs();
+    method_names.reserve(sizeMethods);
     const auto& codecs = ArcAPI::codecs();
     unsigned method_sel = 0;
-    for (unsigned i = 0; i < ARRAYSIZE(c_methods) + ArcAPI::Count7zCodecs(); ++i) {
+    for (unsigned i = 0; i < sizeMethods; ++i) {
       std::wstring method_name = i < ARRAYSIZE(c_methods) ? c_methods[i].value : codecs[i - ARRAYSIZE(c_methods)].Name;
       if (method == method_name)
         method_sel = i;