diff --git a/RubyTest.rb b/RubyTest.rb
index 7f78404..1f5b12f 100644
--- a/RubyTest.rb
+++ b/RubyTest.rb
@@ -30,6 +30,10 @@ module RubyTest
         return message + "[RUBY]"
     end
 
+    def self.prof_on_shutdown()
+        Prof::log_info("RubyTest: on_shutdown");
+    end
+
     def self.cmd_ruby()
         return Proc.new { | msg |
             if msg
diff --git a/python-test.py b/python-test.py
index e5dd681..f45d3df 100644
--- a/python-test.py
+++ b/python-test.py
@@ -25,6 +25,9 @@ def prof_on_message_send(jid, message):
     prof.cons_alert()
     return message + "[PYTHON]"
 
+def prof_on_shutdown():
+    prof.log_info("python-test: on_shutdown")
+
 def cmd_python(msg):
     if msg:
         prof.cons_show("python-test: /python command called, arg = " + msg)
diff --git a/test-c-plugin/test-c-plugin.c b/test-c-plugin/test-c-plugin.c
index 9d69e5f..6b6ca95 100644
--- a/test-c-plugin/test-c-plugin.c
+++ b/test-c-plugin/test-c-plugin.c
@@ -93,3 +93,9 @@ prof_on_message_send(const char * const jid, const char *message)
 
     return result;
 }
+
+void
+prof_on_shutdown(void)
+{
+    prof_log_info("c-test: on_shutdown");
+}