diff --git a/spatial-coordinate-systems/src/dm.rs b/spatial-coordinate-systems/src/dmm.rs
similarity index 83%
rename from spatial-coordinate-systems/src/dm.rs
rename to spatial-coordinate-systems/src/dmm.rs
index 652e14a..d59798f 100644
--- a/spatial-coordinate-systems/src/dm.rs
+++ b/spatial-coordinate-systems/src/dmm.rs
@@ -13,10 +13,10 @@ use nom::{
 use std::str::FromStr;
 
 #[derive(PartialEq, Debug)]
-pub struct Coordinate(pub DM, pub DM);
+pub struct Coordinate(pub DMM, pub DMM);
 
 #[derive(PartialEq, Debug)]
-pub struct DM {
+pub struct DMM {
     pub degrees: i16,
     pub minutes: f64,
     pub direction: Direction,
@@ -36,7 +36,7 @@ pub fn parse_coordinate(i: &str) -> IResult<&str, Coordinate> {
     )(i)
 }
 
-pub fn parse(i: &str) -> IResult<&str, DM> {
+pub fn parse(i: &str) -> IResult<&str, DMM> {
     map(
         tuple((
             // Degrees
@@ -48,7 +48,7 @@ pub fn parse(i: &str) -> IResult<&str, DM> {
             // Direction
             parse_direction,
         )),
-        |(degrees, (), minutes, (), direction)| DM {
+        |(degrees, (), minutes, (), direction)| DMM {
             degrees,
             minutes,
             direction,
@@ -56,7 +56,7 @@ pub fn parse(i: &str) -> IResult<&str, DM> {
     )(i)
 }
 
-impl FromStr for DM {
+impl FromStr for DMM {
     type Err = ();
 
     /// Recognizes DMS in the formats:
@@ -65,16 +65,16 @@ impl FromStr for DM {
     /// * `40 31 21 N, 105 5 39 W`
     ///
     /// ```rust
-    /// use spatial_coordinate_systems::dm::DM;
+    /// use spatial_coordinate_systems::dmm::DMM;
     /// use spatial_coordinate_systems::Direction;
     /// use std::str::FromStr;
     ///
-    /// assert_eq!(DM::from_str("40 31.3 N").unwrap(), DM {
+    /// assert_eq!(DMM::from_str("40 31.3 N").unwrap(), DMM {
     ///     degrees: 40,
     ///     minutes: 31.3_f64,
     ///     direction: Direction::North,
     /// });
-    /// assert_eq!(DM::from_str("40°31'  N").unwrap(), DM {
+    /// assert_eq!(DMM::from_str("40°31'  N").unwrap(), DMM {
     ///     degrees: 40,
     ///     minutes: 31_f64,
     ///     direction: Direction::North,
diff --git a/spatial-coordinate-systems/src/lib.rs b/spatial-coordinate-systems/src/lib.rs
index 922a45a..62ea435 100644
--- a/spatial-coordinate-systems/src/lib.rs
+++ b/spatial-coordinate-systems/src/lib.rs
@@ -3,10 +3,10 @@
 use std::str::FromStr;
 mod common;
 pub mod dd;
-pub mod dm;
+pub mod dmm;
 pub mod dms;
 
-use dm::DM;
+use dmm::DMM;
 use dms::DMS;
 use nom::{
     branch::alt,
@@ -49,7 +49,7 @@ impl Direction {
 pub enum Coordinate {
     DD(dd::Coordinate),
     DMS(dms::Coordinate),
-    DM(dm::Coordinate),
+    DM(dmm::Coordinate),
     // UTM(utm::UTMCoordinate),
     // Plus(plus::PlusCoordinate),
 }
@@ -67,7 +67,7 @@ impl FromStr for Coordinate {
             alt((
                 map(dd::parse_coordinate, Coordinate::DD),
                 map(dms::parse_coordinate, Coordinate::DMS),
-                map(dm::parse_coordinate, Coordinate::DM),
+                map(dmm::parse_coordinate, Coordinate::DM),
                 // map(utm::parse_coordinate, Coordinate::UTM),
                 // map(plus::parse_coordinate, Coordinate::PLUS),
             )),