diff --git a/src/process.cr b/src/process.cr
index 045615c814a7..c8364196373f 100644
--- a/src/process.cr
+++ b/src/process.cr
@@ -89,7 +89,7 @@ class Process
   #   end
   # end
   #
-  # wait_channel.receive
+  # wait_channel.receive?
   # puts "bye"
   # ```
   def self.on_terminate(&handler : ::Process::ExitReason ->) : Nil