diff --git a/Fuzzing/os-names-mutation.txt b/Fuzzing/os-names-mutation.txt
index b95beb29..5d5e8dd4 100644
--- a/Fuzzing/os-names-mutation.txt
+++ b/Fuzzing/os-names-mutation.txt
@@ -1,3 +1,4 @@
+# https://en.wikipedia.org/w/index.php?title=List_of_operating_systems&oldid=1182336353
 RISC-OS
 risc-os
 RISC_OS