diff --git a/tasmota/tasmota_xdrv_driver/xdrv_05_irremote_full.ino b/tasmota/tasmota_xdrv_driver/xdrv_05_irremote_full.ino
index 55eb8e965..0c228a3ee 100644
--- a/tasmota/tasmota_xdrv_driver/xdrv_05_irremote_full.ino
+++ b/tasmota/tasmota_xdrv_driver/xdrv_05_irremote_full.ino
@@ -227,7 +227,7 @@ namespace {
   void addFloatToJson(JsonGeneratorObject& json, const char* key, float value, float noValueConstant = NAN) {
     if (!isnan(noValueConstant) && value == noValueConstant) {
       //The "no sensor value" may not be straightforward (e.g.-100.0), hence replacing with explicit n/a
-      json.addStrRaw(key, PSTR(D_JSON_NULL));
+      json.addStrRaw(key, D_JSON_NULL);
       return;
     }
     char s[6];  // Range: -99.9 <> 999.9 should be fine for any sensible temperature value :)