diff --git a/readme.md b/readme.md
index 536e238..64a8e94 100644
--- a/readme.md
+++ b/readme.md
@@ -1433,7 +1433,7 @@ The 7 SEGMENT.TTF font from the [docs](docs) directory needs to be installed to
 | ```meter_lug_size(type)``` | Lug length and width |
 | ```meter_offset(type)``` | Display position, 0 = center, +1 = top |
 | ```meter_pcb_size(type)``` | PCB size excluding lugs |
-| ```meter_shunt(type)``` | Ampmeter shunt wire |
+| ```meter_shunt(type)``` | Ammeter shunt wire |
 | ```meter_size(type)``` | Size of display |
 
 ### Functions
diff --git a/vitamins/led_meter.scad b/vitamins/led_meter.scad
index 981b78c..37af9f3 100644
--- a/vitamins/led_meter.scad
+++ b/vitamins/led_meter.scad
@@ -34,7 +34,7 @@ function meter_lug_size(type)    = type[4];     //! Lug length and width
 function meter_lug_offset(type)  = type[5];     //! Lug position, 0 = center, +1 = top
 function meter_hole_pitch(type)  = type[6];     //! Lug hole pitch
 function meter_hole_radius(type) = type[7];     //! Lug hole radius
-function meter_shunt(type)       = type[8];     //! Ampmeter shunt wire
+function meter_shunt(type)       = type[8];     //! Ammeter shunt wire
 
 function meter_pos(type) = (meter_pcb_size(type).y - meter_size(type).y) * meter_offset(type) / 2;
 function meter_lug_pos(type) = (meter_pcb_size(type).y - meter_lug_size(type).y) * meter_lug_offset(type) / 2;