diff --git a/NEWS.adoc b/NEWS.adoc
index 8da073ce8e..0e55866155 100644
--- a/NEWS.adoc
+++ b/NEWS.adoc
@@ -281,6 +281,9 @@ https://github.com/networkupstools/nut/milestone/13
       `battery.runtime`, `battery.voltage`, `input.frequency`,
       `output.voltage.nominal` and `ups.firmware.aux` from Phoenixtec
       based UPS cards that already answer the rest of the subtree. [#2608]
+    * Mapped `standby(8)` from XPPC output status to `OL` rather than `OFF`,
+      because line-interactive devices use it for inverter standby while their
+      UPS output remains online on utility power. [issue #3512]
     * Introduced `voltronic` subdriver for Voltronic enterprise 43943 UPSes,
       developed and tested against a PowerShield Centurion RT 1000VA
       (PSCERT1000) with a PSSNMPV4 card running firmware 1.1.8.C. [issue #3478,
diff --git a/drivers/xppc-mib.c b/drivers/xppc-mib.c
index f74cbd782f..cc1d774911 100644
--- a/drivers/xppc-mib.c
+++ b/drivers/xppc-mib.c
@@ -24,7 +24,7 @@
 
 #include "xppc-mib.h"
 
-#define XPPC_MIB_VERSION  "0.41"
+#define XPPC_MIB_VERSION  "0.42"
 
 #define XPPC_SYSOID       ".1.3.6.1.4.1.935"
 
@@ -66,7 +66,7 @@ static info_lkp_t xpcc_power_info[] = {
 	info_lkp_default(5, "OFF"),	/* sleeping */
 	info_lkp_default(6, "BYPASS"),	/* onBypass */
 	info_lkp_default(7, ""),	/* rebooting */
-	info_lkp_default(8, "OFF"),	/* standBy */
+	info_lkp_default(8, "OL"),	/* line-interactive inverter standby, not UPS/output standby */
 	info_lkp_default(9, "OL TRIM"),	/* onBuck */
 	info_lkp_sentinel
 };