diff --git a/esphome/components/voice_assistant/voice_assistant.h b/esphome/components/voice_assistant/voice_assistant.h
index dd9d205aff..d46b089c2e 100644
--- a/esphome/components/voice_assistant/voice_assistant.h
+++ b/esphome/components/voice_assistant/voice_assistant.h
@@ -81,12 +81,6 @@ struct Timer {
              this->id.c_str(), this->name.c_str(), this->total_seconds, this->seconds_left, YESNO(this->is_active));
     return buffer.data();
   }
-  // Remove before 2026.8.0
-  ESPDEPRECATED("Use to_str() instead. Removed in 2026.8.0", "2026.2.0")
-  std::string to_string() const {  // NOLINT
-    char buffer[TO_STR_BUFFER_SIZE];
-    return this->to_str(buffer);
-  }
 };
 
 struct WakeWord {