diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index fad21203..525a53db 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -436,6 +436,9 @@ Factor:
   type: programming
   color: "#636746"
   primary_extension: .factor
+  filenames:
+    - .factor-rc
+    - .factor-boot-rc
 
 Fancy:
   type: programming