diff --git a/fc-lang/az.orth b/fc-lang/az_az.orth
similarity index 97%
rename from fc-lang/az.orth
rename to fc-lang/az_az.orth
index db2f32e..9439f3e 100644
--- a/fc-lang/az.orth
+++ b/fc-lang/az_az.orth
@@ -1,5 +1,5 @@
 #
-# fontconfig/fc-lang/az.orth
+# fontconfig/fc-lang/az_az.orth
 #
 # Copyright © 2002 Keith Packard
 #
@@ -21,7 +21,7 @@
 # TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 #
-# Azerbaijani (AZ)
+# Azerbaijani in Azerbaijan (az-AZ)
 #
 # The complete orthography is from http://www.evertype.com
 #