diff --git a/libraries/AP_OSD/AP_OSD_Screen.cpp b/libraries/AP_OSD/AP_OSD_Screen.cpp
index 634639fd3e..619d30239a 100644
--- a/libraries/AP_OSD/AP_OSD_Screen.cpp
+++ b/libraries/AP_OSD/AP_OSD_Screen.cpp
@@ -942,8 +942,7 @@ void AP_OSD_Screen::draw_rssi(uint8_t x, uint8_t y)
 {
     AP_RSSI *ap_rssi = AP_RSSI::get_singleton();
     if (ap_rssi) {
-        int rssiv = ap_rssi->read_receiver_rssi_uint8();
-        rssiv = (rssiv * 99) / 255;
+        const uint8_t rssiv = ap_rssi->read_receiver_rssi() * 99;
         backend->write(x, y, rssiv < osd->warn_rssi, "%c%2d", SYM_RSSI, rssiv);
     }
 }