diff --git a/esphome/components/prometheus/prometheus_handler.cpp b/esphome/components/prometheus/prometheus_handler.cpp
index 6a50260d942..75910fa73dd 100644
--- a/esphome/components/prometheus/prometheus_handler.cpp
+++ b/esphome/components/prometheus/prometheus_handler.cpp
@@ -709,8 +709,8 @@ 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=\""));
-    auto option = obj->current_option();
-    stream->write(option.c_str(), option.size());
+    // c_str() is safe as option values are null-terminated strings from codegen
+    stream->print(obj->current_option().c_str());
     stream->print(ESPHOME_F("\"} "));
     stream->print(ESPHOME_F("1.0"));
     stream->print(ESPHOME_F("\n"));