diff --git a/firefox.spec b/firefox.spec
index de1c293af6c16f76096725e3a9270f0bfd87ad44..3d6ee88c0efedb7b2f84fab4b6da2e08429a1099 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -9,15 +9,15 @@
 
 %{lua:
 function dist_to_rhel_minor(str, start)
-  match = string.match(str, ".module%+el8.%d+")
+  match = string.match(str, ".module%+an8.%d+")
   if match then
      return string.sub(match, 13)
   end
-  match = string.match(str, ".el8_%d+")
+  match = string.match(str, ".an8_%d+")
   if match then
      return string.sub(match, 6)
   end
-  match = string.match(str, ".el8")
+  match = string.match(str, ".an8")
   if match then
      return 6
   end