diff --git a/esphome/components/prometheus/prometheus_handler.cpp b/esphome/components/prometheus/prometheus_handler.cpp
index e29d890d78..908829f663 100644
--- a/esphome/components/prometheus/prometheus_handler.cpp
+++ b/esphome/components/prometheus/prometheus_handler.cpp
@@ -709,6 +709,7 @@ void PrometheusHandler::select_row_(AsyncResponseStream *stream, select::Select
     stream->print(ESPHOME_F("\",name=\""));
     stream->print(relabel_name_(obj).c_str());
     stream->print(ESPHOME_F("\",value=\""));
+    // current_option() returns string_view pointing to null-terminated string literals from codegen
     stream->print(obj->current_option().data());
     stream->print(ESPHOME_F("\"} "));
     stream->print(ESPHOME_F("1.0"));
diff --git a/esphome/components/web_server/web_server.cpp b/esphome/components/web_server/web_server.cpp
index 27fe47842e..0ae838f281 100644
--- a/esphome/components/web_server/web_server.cpp
+++ b/esphome/components/web_server/web_server.cpp
@@ -1420,6 +1420,7 @@ std::string WebServer::select_json_(select::Select *obj, std::string_view value,
   json::JsonBuilder builder;
   JsonObject root = builder.root();
 
+  // value points to null-terminated string literals from codegen (via current_option())
   set_json_icon_state_value(root, obj, "select", value.data(), value.data(), start_config);
   if (start_config == DETAIL_ALL) {
     JsonArray opt = root[ESPHOME_F("option")].to<JsonArray>();