diff --git a/lib/obsws/event.rb b/lib/obsws/event.rb
index b8fb51e..f14f650 100644
--- a/lib/obsws/event.rb
+++ b/lib/obsws/event.rb
@@ -40,12 +40,12 @@ module OBSWS
       end
 
       def register(cbs)
-        cbs = [cbs] unless cbs.respond_to? :each
+        cbs = Array(cbs) unless cbs.respond_to? :each
         cbs.each { |cb| on(cb.name[3..].to_sym, cb) }
       end
 
       def deregister(cbs)
-        cbs = [cbs] unless cbs.respond_to? :each
+        cbs = Array(cbs) unless cbs.respond_to? :each
         cbs.each { |cb| observers[cb.name[3..].to_sym]&.reject! { |o| cbs.include? o } }
       end