diff --git a/components/dlms_push/dlms_parser.h b/components/dlms_push/dlms_parser.h
index f185ea9..1acf5a4 100644
--- a/components/dlms_push/dlms_parser.h
+++ b/components/dlms_push/dlms_parser.h
@@ -113,8 +113,8 @@ class DlmsParser {
   void emit_object_(const AxdrDescriptorPattern &pat, const AxdrCaptures &c);
 
   float data_as_float_(DlmsDataType value_type, const uint8_t *ptr, uint8_t len);
-  std::string data_to_string_(DlmsDataType value_type, const uint8_t *ptr, uint8_t len, char *buffer, size_t max_len);
-  std::string obis_to_string_(const uint8_t *obis, char *buffer, size_t max_len);
+  void data_to_string_(DlmsDataType value_type, const uint8_t *ptr, uint8_t len, char *buffer, size_t max_len);
+  void obis_to_string_(const uint8_t *obis, char *buffer, size_t max_len);
   const char *dlms_data_type_to_string_(DlmsDataType vt);
 
   const uint8_t *buffer_{nullptr};
diff --git a/components/dlms_push/dlms_push.cpp b/components/dlms_push/dlms_push.cpp
index 5744528..6118c08 100644
--- a/components/dlms_push/dlms_push.cpp
+++ b/components/dlms_push/dlms_push.cpp
@@ -2,6 +2,7 @@
 #include "dlms_parser.h"
 
 #include "esphome/core/log.h"
+#include "esphome/core/application.h"
 #include "esphome/core/helpers.h"
 
 namespace esphome {