diff --git a/esphome/components/prometheus/prometheus_handler.cpp b/esphome/components/prometheus/prometheus_handler.cpp
index abb5111aaf..68bca95a21 100644
--- a/esphome/components/prometheus/prometheus_handler.cpp
+++ b/esphome/components/prometheus/prometheus_handler.cpp
@@ -1,5 +1,3 @@
-#ifdef USE_ARDUINO
-
 #include "prometheus_handler.h"
 #include "esphome/core/application.h"
 
@@ -89,7 +87,7 @@ void PrometheusHandler::sensor_row_(AsyncResponseStream *stream, sensor::Sensor
     stream->print(obj->get_unit_of_measurement().c_str());
     stream->print(F("\"} "));
     stream->print(value_accuracy_to_string(obj->state, obj->get_accuracy_decimals()).c_str());
-    stream->print('\n');
+    stream->print(F("\n"));
   } else {
     // Invalid state
     stream->print(F("esphome_sensor_failed{id=\""));
@@ -124,7 +122,7 @@ void PrometheusHandler::binary_sensor_row_(AsyncResponseStream *stream, binary_s
     stream->print(relabel_name_(obj).c_str());
     stream->print(F("\"} "));
     stream->print(obj->state);
-    stream->print('\n');
+    stream->print(F("\n"));
   } else {
     // Invalid state
     stream->print(F("esphome_binary_sensor_failed{id=\""));
@@ -158,7 +156,7 @@ void PrometheusHandler::fan_row_(AsyncResponseStream *stream, fan::Fan *obj) {
   stream->print(relabel_name_(obj).c_str());
   stream->print(F("\"} "));
   stream->print(obj->state);
-  stream->print('\n');
+  stream->print(F("\n"));
   // Speed if available
   if (obj->get_traits().supports_speed()) {
     stream->print(F("esphome_fan_speed{id=\""));
@@ -167,7 +165,7 @@ void PrometheusHandler::fan_row_(AsyncResponseStream *stream, fan::Fan *obj) {
     stream->print(relabel_name_(obj).c_str());
     stream->print(F("\"} "));
     stream->print(obj->speed);
-    stream->print('\n');
+    stream->print(F("\n"));
   }
   // Oscillation if available
   if (obj->get_traits().supports_oscillation()) {
@@ -177,7 +175,7 @@ void PrometheusHandler::fan_row_(AsyncResponseStream *stream, fan::Fan *obj) {
     stream->print(relabel_name_(obj).c_str());
     stream->print(F("\"} "));
     stream->print(obj->oscillating);
-    stream->print('\n');
+    stream->print(F("\n"));
   }
 }
 #endif
@@ -281,7 +279,7 @@ void PrometheusHandler::cover_row_(AsyncResponseStream *stream, cover::Cover *ob
     stream->print(relabel_name_(obj).c_str());
     stream->print(F("\"} "));
     stream->print(obj->position);
-    stream->print('\n');
+    stream->print(F("\n"));
     if (obj->get_traits().get_supports_tilt()) {
       stream->print(F("esphome_cover_tilt{id=\""));
       stream->print(relabel_id_(obj).c_str());
@@ -289,7 +287,7 @@ void PrometheusHandler::cover_row_(AsyncResponseStream *stream, cover::Cover *ob
       stream->print(relabel_name_(obj).c_str());
       stream->print(F("\"} "));
       stream->print(obj->tilt);
-      stream->print('\n');
+      stream->print(F("\n"));
     }
   } else {
     // Invalid state
@@ -322,7 +320,7 @@ void PrometheusHandler::switch_row_(AsyncResponseStream *stream, switch_::Switch
   stream->print(relabel_name_(obj).c_str());
   stream->print(F("\"} "));
   stream->print(obj->state);
-  stream->print('\n');
+  stream->print(F("\n"));
 }
 #endif
 
@@ -346,11 +344,9 @@ void PrometheusHandler::lock_row_(AsyncResponseStream *stream, lock::Lock *obj)
   stream->print(relabel_name_(obj).c_str());
   stream->print(F("\"} "));
   stream->print(obj->state);
-  stream->print('\n');
+  stream->print(F("\n"));
 }
 #endif
 
 }  // namespace prometheus
 }  // namespace esphome
-
-#endif  // USE_ARDUINO
diff --git a/esphome/components/prometheus/prometheus_handler.h b/esphome/components/prometheus/prometheus_handler.h
index 0ae2856ce4..a9505a3572 100644
--- a/esphome/components/prometheus/prometheus_handler.h
+++ b/esphome/components/prometheus/prometheus_handler.h
@@ -1,14 +1,12 @@
 #pragma once
 
-#ifdef USE_ARDUINO
-
 #include <map>
 #include <utility>
 
-#include "esphome/core/entity_base.h"
 #include "esphome/components/web_server_base/web_server_base.h"
-#include "esphome/core/controller.h"
 #include "esphome/core/component.h"
+#include "esphome/core/controller.h"
+#include "esphome/core/entity_base.h"
 
 namespace esphome {
 namespace prometheus {
@@ -119,5 +117,3 @@ class PrometheusHandler : public AsyncWebHandler, public Component {
 
 }  // namespace prometheus
 }  // namespace esphome
-
-#endif  // USE_ARDUINO