diff --git a/lib/faraday/request/retry.rb b/lib/faraday/request/retry.rb
index b05c5181..6ce8597e 100644
--- a/lib/faraday/request/retry.rb
+++ b/lib/faraday/request/retry.rb
@@ -47,7 +47,7 @@ module Faraday
       end
 
       def interval_randomness
-        (self[:interval_randomness] ||= 0).to_i
+        (self[:interval_randomness] ||= 0).to_f
       end
 
       def backoff_factor