diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index f4195d88..98f2664e 100755
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -4079,6 +4079,8 @@ TI Program:
   extensions:
   - ".8xp"
   - ".8xk"
+  - ".8xk.txt"
+  - ".8xp.txt"
   language_id: 422
   tm_scope: none
 TLA:
diff --git a/samples/TI Program/srcalpha.txt b/samples/TI Program/srcalpha.8xp.txt
similarity index 100%
rename from samples/TI Program/srcalpha.txt
rename to samples/TI Program/srcalpha.8xp.txt
diff --git a/samples/TI Program/srcfunc.txt b/samples/TI Program/srcfunc.8xp.txt
similarity index 100%
rename from samples/TI Program/srcfunc.txt
rename to samples/TI Program/srcfunc.8xp.txt
diff --git a/samples/TI Program/srcgui.txt b/samples/TI Program/srcgui.8xp.txt
similarity index 100%
rename from samples/TI Program/srcgui.txt
rename to samples/TI Program/srcgui.8xp.txt
diff --git a/samples/TI Program/srcsort.txt b/samples/TI Program/srcsort.8xp.txt
similarity index 100%
rename from samples/TI Program/srcsort.txt
rename to samples/TI Program/srcsort.8xp.txt