diff --git a/src/psu/PSUSensorMain.cpp b/src/psu/PSUSensorMain.cpp
index ad8b10f..63bc6b5 100644
--- a/src/psu/PSUSensorMain.cpp
+++ b/src/psu/PSUSensorMain.cpp
@@ -1111,7 +1111,8 @@
             createSensorsCallback(io, objectServer, dbusConnection,
                                   sensorConfigs, sensorsChanged, activateOnly);
         });
-    std::vector<std::string> types(sensorTypes.size());
+    std::vector<std::string> types;
+    types.reserve(sensorTypes.size());
     for (const auto& [type, dt] : sensorTypes)
     {
         types.push_back(type);