diff --git a/include/ircd/m/hook.h b/include/ircd/m/hook.h
index 09a924448..a7224c9b3 100644
--- a/include/ircd/m/hook.h
+++ b/include/ircd/m/hook.h
@@ -41,6 +41,7 @@ struct ircd::m::hook::base
 	bool registered {false};
 	size_t matchers {0};
 	size_t calls {0};
+	size_t calling {0};
 
 	string_view site_name() const;
 	site *find_site() const;
@@ -62,6 +63,8 @@ struct ircd::m::hook::base::site
 	std::set<base *> hooks;
 	size_t matchers {0};
 	bool exceptions {true};
+	size_t calls {0};
+	size_t calling {0};
 
 	friend class base;
 	string_view name() const;
@@ -154,7 +157,15 @@ ircd::m::hook::site<data>::call(hook<data> &hfn,
                                 data d)
 try
 {
+	// stats for site
+	++calls;
+	const scope_count site_calling{calling};
+
+	// stats for hook
 	++hfn.calls;
+	const scope_count hook_calling{hfn.calling};
+
+	// call hook
 	hfn.function(event, d);
 }
 catch(const std::exception &e)
diff --git a/ircd/m.cc b/ircd/m.cc
index d9cdd0cf5..1d9512e7f 100644
--- a/ircd/m.cc
+++ b/ircd/m.cc
@@ -5555,6 +5555,8 @@ noexcept
 
 	auto *const site(find_site());
 	assert(site != nullptr);
+	assert(site->calling == 0);
+	assert(calling == 0);
 	site->del(*this);
 }
 
@@ -5773,7 +5775,15 @@ ircd::m::hook::site<void>::call(hook<void> &hfn,
                                 const event &event)
 try
 {
+	// stats for site
+	++calls;
+	const scope_count site_calling{calling};
+
+	// stats for hook
 	++hfn.calls;
+	const scope_count hook_calling{hfn.calling};
+
+	// call hook
 	hfn.function(event);
 }
 catch(const std::exception &e)