diff --git a/rubygems.prov b/rubygems.prov
index f23ec3f..3247573 100644
--- a/rubygems.prov
+++ b/rubygems.prov
@@ -23,7 +23,7 @@ module RubyGemsProv
       begin
         specification = Gem::Specification.load filename
 
-        puts "rubygem(#{specification.name}) = #{Helpers::normalize_prerelease(specification.version)}"
+        puts "alt-brepo-ruby30-rubygem(#{specification.name}) = #{Helpers::normalize_prerelease(specification.version)}"
       rescue => e
         # Ignore all errors.
       end