diff --git a/src/main/common/maths.h b/src/main/common/maths.h
index 7ee0ac980a..300c18fae6 100644
--- a/src/main/common/maths.h
+++ b/src/main/common/maths.h
@@ -39,6 +39,7 @@
 #define DEGREES_TO_RADIANS(angle) ((angle) * 0.0174532925f)
 
 #define CM_S_TO_KM_H(centimetersPerSecond) (centimetersPerSecond * 36 / 1000)
+#define CM_S_TO_MPH(centimetersPerSecond) (((centimetersPerSecond * 10000) / 5080) / 88)
 
 #define MIN(a,b) \
   __extension__ ({ __typeof__ (a) _a = (a); \
diff --git a/src/main/io/osd.c b/src/main/io/osd.c
index bed34cc9f3..ec85489cf4 100644
--- a/src/main/io/osd.c
+++ b/src/main/io/osd.c
@@ -428,8 +428,15 @@ static bool osdDrawSingleElement(uint8_t item)
         break;
 
     case OSD_GPS_SPEED:
-        // FIXME ideally we want to use SYM_KMH symbol but it's not in the font any more, so we use K.
-        tfp_sprintf(buff, "%3dK", CM_S_TO_KM_H(gpsSol.groundSpeed));
+        // FIXME ideally we want to use SYM_KMH symbol but it's not in the font any more, so we use K (M for MPH)
+        switch (osdConfig()->units) {
+        case OSD_UNIT_IMPERIAL:
+            tfp_sprintf(buff, "%3dM", CM_S_TO_MPH(gpsSol.groundSpeed));
+            break;
+        default:
+            tfp_sprintf(buff, "%3dK", CM_S_TO_KM_H(gpsSol.groundSpeed));
+            break;
+        }
         break;
 
     case OSD_GPS_LAT:
@@ -1121,7 +1128,14 @@ static void osdUpdateStats(void)
 {
     int16_t value = 0;
 #ifdef USE_GPS
-    value = CM_S_TO_KM_H(gpsSol.groundSpeed);
+    switch (osdConfig()->units) {
+    case OSD_UNIT_IMPERIAL:
+        value = CM_S_TO_MPH(gpsSol.groundSpeed);
+        break;
+    default:
+        value = CM_S_TO_KM_H(gpsSol.groundSpeed);
+        break;
+    }
 #endif
     if (stats.max_speed < value) {
         stats.max_speed = value;
diff --git a/src/test/unit/osd_unittest.cc b/src/test/unit/osd_unittest.cc
index d087cc269f..1c169bb125 100644
--- a/src/test/unit/osd_unittest.cc
+++ b/src/test/unit/osd_unittest.cc
@@ -370,7 +370,7 @@ TEST(OsdTest, TestStatsImperial)
     displayPortTestBufferSubstring(2, row++, "2017-11-19 10:12:");
     displayPortTestBufferSubstring(2, row++, "TOTAL ARM         : 00:05.00");
     displayPortTestBufferSubstring(2, row++, "LAST ARM          : 00:03");
-    displayPortTestBufferSubstring(2, row++, "MAX SPEED         : 28");
+    displayPortTestBufferSubstring(2, row++, "MAX SPEED         : 17");
     displayPortTestBufferSubstring(2, row++, "MAX DISTANCE      : 328%c", SYM_FT);
     displayPortTestBufferSubstring(2, row++, "MIN BATTERY       : 14.7%c", SYM_VOLT);
     displayPortTestBufferSubstring(2, row++, "END BATTERY       : 15.2%c", SYM_VOLT);