diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 233fa3e1..82ed98ea 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -157,6 +157,7 @@ Assembly:
   - nasm
   extensions:
   - .asm
+  - .inc
 
 Augeas:
   type: programming