diff --git a/include/ircd/buffer/buffer.h b/include/ircd/buffer/buffer.h
index b376ba8c8..4df46d544 100644
--- a/include/ircd/buffer/buffer.h
+++ b/include/ircd/buffer/buffer.h
@@ -293,9 +293,9 @@ ircd::buffer::move(it &dest,
 {
 	assert(dest <= stop);
 	const it ret(dest);
-	const ssize_t &srcsz(size(src));
-	const ssize_t &remain(std::distance(ret, stop));
-	const ssize_t &mvsz(std::min(srcsz, remain));
+	const size_t &srcsz(size(src));
+	const size_t &remain(std::distance(ret, stop));
+	const size_t &mvsz(std::min(srcsz, remain));
 	dest += mvsz;
 	assert(dest <= stop);
 	assert(mvsz <= srcsz);
@@ -313,9 +313,9 @@ ircd::buffer::copy(it &dest,
 {
 	assert(dest <= stop);
 	const it ret(dest);
-	const ssize_t &srcsz(size(src));
-	const ssize_t &remain(std::distance(ret, stop));
-	const ssize_t &cpsz(std::min(srcsz, remain));
+	const size_t &srcsz(size(src));
+	const size_t &remain(std::distance(ret, stop));
+	const size_t &cpsz(std::min(srcsz, remain));
 	dest += cpsz;
 	assert(dest <= stop);
 	assert(cpsz <= srcsz);
diff --git a/ircd/lexical.cc b/ircd/lexical.cc
index 192b449d6..7184d68ce 100644
--- a/ircd/lexical.cc
+++ b/ircd/lexical.cc
@@ -415,10 +415,10 @@ ircd::replace(const string_view &s,
               const char &before,
               const string_view &after)
 {
-	const auto occurs
-	{
+	const uint32_t occurs
+	(
 		std::count(begin(s), end(s), before)
-	};
+	);
 
 	const size_t size
 	{
diff --git a/modules/m_room.cc b/modules/m_room.cc
index 364d1ff2a..70abb3d01 100644
--- a/modules/m_room.cc
+++ b/modules/m_room.cc
@@ -832,7 +832,7 @@ room_herd(const m::room &room,
 		return true;
 	});
 
-	ssize_t i(0);
+	size_t i(0);
 	for(const m::event::id &event_id : event_ids)
 		if(exists(event_id))
 		{
@@ -845,7 +845,7 @@ room_herd(const m::room &room,
 		room
 	};
 
-	for(; i >= 0 && head.count() > 1; --i)
+	for(; i + 1 >= 1 && head.count() > 1; --i)
 	{
 		const auto eid
 		{