diff --git a/src/lib.rs b/src/lib.rs
index fb9bcaef..88944ef6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -84,9 +84,14 @@ pub fn commit(repo: Repository, oid: Oid, msg: &str) -> result::Result<Oid, git2
     )
 }
 
-pub fn lang_to_language(lang: String) -> String {
-    let re = Regex::new(r"_.*$").unwrap();
-    String::from(re.replace(lang.as_str(), ""))
+pub fn locale_to_language(lang: String) -> String {
+    let re = Regex::new(r"[-_\.].*$").unwrap();
+    let locale_frag = lang.as_str().to_lowercase();
+    let lang = re.replace(&locale_frag, "");
+    match &lang[..] {
+        "c" => String::from("en"),
+        _ => String::from(lang),
+    }
 }
 
 /// Output welcome header at start of run before moving on to actual commands
diff --git a/src/make/mod.rs b/src/make/mod.rs
index c7a29430..e4f3f99c 100644
--- a/src/make/mod.rs
+++ b/src/make/mod.rs
@@ -59,7 +59,7 @@ pub fn run(target: Vec<String>) -> Result<()> {
         .env("CASILE_JOBS", cpus)
         .env("CASILEDIR", CONFIGURE_DATADIR)
         .env("CONTAINERIZED", status::is_container().to_string())
-        .env("LANGUAGE", lang_to_language(CONF.get_string("language")?))
+        .env("LANGUAGE", locale_to_language(CONF.get_string("language")?))
         .env("PROJECT", gitname)
         .env("PROJECTDIR", CONF.get_string("path")?)
         .env("PROJECTVERSION", git_version);