diff --git a/soc/nxp/rw/Kconfig.defconfig b/soc/nxp/rw/Kconfig.defconfig
index 581dc43582f..3c4677b784c 100644
--- a/soc/nxp/rw/Kconfig.defconfig
+++ b/soc/nxp/rw/Kconfig.defconfig
@@ -57,4 +57,12 @@ if WIFI
 orsource "Kconfig.defconfig.wifi"
 endif # WIFI
 
+if PM
+# For PM mode 3 we change this config to get better accuracy
+# when using the iKHz RTC clock as system clock.
+config SYS_CLOCK_TICKS_PER_SEC
+	default 1000
+	depends on $(dt_nodelabel_enabled,standby)
+endif
+
 endif # SOC_SERIES_RW6XX