diff --git a/data/glossaries/external.yml b/data/glossaries/external.yml
index 9b5b06ca0245..b058b772e655 100644
--- a/data/glossaries/external.yml
+++ b/data/glossaries/external.yml
@@ -473,7 +473,7 @@
     Open source software is software that can be freely used, modified, and
     shared (in both modified and unmodified form) by anyone. Today the concept
     of "open source" is often extended beyond software, to represent a
-    philosophy of collaboration in which working materials are made available
+    philosophy of collaboration in which source files of digital resources are made available
     online for anyone to fork, modify, discuss, and contribute to.
 - term: organization
   description: >-