diff --git a/fw/wmi_unified.h b/fw/wmi_unified.h
index d96feef59a..c13cdf7c0d 100644
--- a/fw/wmi_unified.h
+++ b/fw/wmi_unified.h
@@ -41078,13 +41078,22 @@ typedef struct {
 typedef struct {
     A_UINT32 tlv_header;
     A_UINT32 chan_cfreq; /* Channel center frequency (MHz) of all BSS Sub-channel */
-    A_INT32 psd_power;   /* Unit: dBm/MHz, OOBE PSD power of sub-channel */
+    /* psd_power:
+     * Unit: 0.25dBm/MHz, OOBE PSD power of sub-channel
+     * Example: a power spectral density of 1 dBm / MHz will be reported
+     * as the value 4.
+     */
+    A_INT32 psd_power;
 } wmi_vdev_ch_power_psd_info;
 
 typedef struct {
     A_UINT32 tlv_header;
     A_UINT32 chan_cfreq; /* Channel center frequency (MHz) for all BWs (<= current channel BSS BW) */
-    A_INT32 eirp_power;   /* Unit: dBm, EIRP power for all BWs (<= current channel BSS BW) */
+    /* eirp_power:
+     * Unit: 0.25dBm, EIRP power for all BWs (<= current channel BSS BW)
+     * Example: a power of 1 dBm will be reported as the value 4.
+     */
+    A_INT32 eirp_power;
  } wmi_vdev_ch_power_eirp_info;
 
 typedef struct {
diff --git a/fw/wmi_version.h b/fw/wmi_version.h
index 9f53a54e2b..ff5d091f67 100644
--- a/fw/wmi_version.h
+++ b/fw/wmi_version.h
@@ -37,7 +37,7 @@
 #define __WMI_VER_MINOR_    0
 /** WMI revision number has to be incremented when there is a
  *  change that may or may not break compatibility. */
-#define __WMI_REVISION_ 1438
+#define __WMI_REVISION_ 1439
 
 /** The Version Namespace should not be normally changed. Only
  *  host and firmware of the same WMI namespace will work