diff --git a/vendor/gems/message_bus/lib/message_bus/diagnostics.rb b/vendor/gems/message_bus/lib/message_bus/diagnostics.rb
index 871755afbd6..f4248dd5615 100644
--- a/vendor/gems/message_bus/lib/message_bus/diagnostics.rb
+++ b/vendor/gems/message_bus/lib/message_bus/diagnostics.rb
@@ -4,6 +4,8 @@ class MessageBus::Diagnostics
       system = `uname`.strip
       if system == "Darwin"
         `ps -o "comm=" -p #{Process.pid}`
+      elsif system == "FreeBSD"
+        `ps -o command -p #{Process.pid}`.split("\n",2)[1].strip()
       else
         info = `ps -eo "%p|$|%a" | grep '^\\s*#{Process.pid}'`
         info.strip.split('|$|')[1]