diff --git a/ArduSub/commands_logic.cpp b/ArduSub/commands_logic.cpp
index 70a006cdc0..8d49c3eb43 100644
--- a/ArduSub/commands_logic.cpp
+++ b/ArduSub/commands_logic.cpp
@@ -353,7 +353,10 @@ void Sub::do_circle(const AP_Mission::Mission_Command& cmd)
     }
 
     // calculate radius
-    uint8_t circle_radius_m = HIGHBYTE(cmd.p1); // circle radius held in high byte of p1
+    uint16_t circle_radius_m = HIGHBYTE(cmd.p1); // circle radius held in high byte of p1
+    if (cmd.type_specific_bits & (1U << 0)) {
+        circle_radius_m *= 10;
+    }
 
     // move to edge of circle (verify_circle) will ensure we begin circling once we reach the edge
     auto_circle_movetoedge_start(circle_center, circle_radius_m);