diff --git a/lib/fizzbuzz.rb b/lib/fizzbuzz.rb
index 717b0e7..dcfdf78 100644
--- a/lib/fizzbuzz.rb
+++ b/lib/fizzbuzz.rb
@@ -8,8 +8,10 @@ def calculate number
       'fizz'
     elsif number % 5 == 0
       'buzz'
+    elsif number.to_s.include? '7'
+      'GitHub+1'
     else
       number
     end
   end
-end
\ No newline at end of file
+end