diff --git a/src/game.rs b/src/game.rs
index f7f6785..8254756 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -36,6 +36,7 @@ pub enum RoomType {Room, Set}
 pub struct InvalidRoomType;
 
 impl RoomType {
+    #[inline]
     fn from(string: &str) -> Result<RoomType, InvalidRoomType> {
         match string {
             "ROOM" => Ok(RoomType::Room),
@@ -46,6 +47,7 @@ impl RoomType {
 }
 
 impl ToString for RoomType {
+    #[inline]
     fn to_string(&self) -> String {
         match &self {
             RoomType::Set  => "SET",
@@ -64,6 +66,7 @@ pub struct Version {
 pub struct InvalidVersion;
 
 impl Version {
+    #[inline]
     fn from(str: &str) -> Result<Version, InvalidVersion> {
         let parts: Vec<&str> = str.split(".").collect();
         if parts.len() == 2 {
@@ -106,6 +109,7 @@ pub struct GameHasNoAvatar;
 // todo no tiles? no rooms? no palettes?
 
 impl Game {
+    #[inline]
     pub fn from(string: String) -> Result<Game, GameHasNoAvatar> {
         let line_endings_crlf = string.contains("\r\n");
         let mut string = string;