diff --git a/extensions/m_echotags.c b/extensions/m_echotags.c
index 858f7f90..bbf78aed 100644
--- a/extensions/m_echotags.c
+++ b/extensions/m_echotags.c
@@ -20,18 +20,16 @@ DECLARE_MODULE_AV2(echotags, NULL, NULL, echotags_clist, NULL, NULL, NULL, NULL,
 static void
 m_echotags(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 {
-	int i;
-
 	sendto_one_notice(source_p, ":*** You sent %zu tags.", msgbuf_p->n_tags);
 
-	for (i = 0; i < msgbuf_p->n_tags; i++)
+	for (size_t i = 0; i < msgbuf_p->n_tags; i++)
 	{
 		struct MsgTag *tag = &msgbuf_p->tags[i];
 
 		if (tag->value)
-			sendto_one_notice(source_p, ":*** %d: %s => %s", i, tag->key, tag->value);
+			sendto_one_notice(source_p, ":*** %zu: %s => %s", i, tag->key, tag->value);
 		else
-			sendto_one_notice(source_p, ":*** %d: %s", i, tag->key);
+			sendto_one_notice(source_p, ":*** %zu: %s", i, tag->key);
 	}
 }
 
diff --git a/include/channel.h b/include/channel.h
index 44323b0e..9069296e 100644
--- a/include/channel.h
+++ b/include/channel.h
@@ -73,7 +73,7 @@ struct Channel
 	unsigned int join_count;  /* joins within delta */
 	unsigned int join_delta;  /* last ts of join */
 
-	unsigned long bants;
+	time_t bants;
 	time_t channelts;
 	char *chname;
 
@@ -93,7 +93,7 @@ struct membership
 	struct Client *client_p;
 	unsigned int flags;
 
-	unsigned long bants;
+	time_t bants;
 };
 
 #define BANLEN 195
diff --git a/include/msg.h b/include/msg.h
index 34c69f82..3709163a 100644
--- a/include/msg.h
+++ b/include/msg.h
@@ -54,7 +54,7 @@ typedef void (*MessageHandler) (struct MsgBuf *, struct Client *, struct Client
 struct MessageEntry
 {
 	MessageHandler handler;
-	int min_para;
+	size_t min_para;
 };
 
 /* Message table structure */
diff --git a/ircd/msgbuf.c b/ircd/msgbuf.c
index 4d47b186..50538d27 100644
--- a/ircd/msgbuf.c
+++ b/ircd/msgbuf.c
@@ -35,7 +35,6 @@ msgbuf_parse(struct MsgBuf *msgbuf, char *line)
 	char *ch;
 	char *parv[MAXPARA];
 	size_t n_para;
-	int i;
 
 	/* skip any leading spaces */
 	for (ch = line; *ch && *ch == ' '; ch++)
@@ -108,7 +107,7 @@ msgbuf_parse(struct MsgBuf *msgbuf, char *line)
 		return 1;
 
 	msgbuf->cmd = parv[0];
-	for (i = 0; i < n_para; i++)
+	for (size_t i = 0; i < n_para; i++)
 		msgbuf_append_para(msgbuf, parv[i]);
 
 	return 0;
@@ -117,9 +116,7 @@ msgbuf_parse(struct MsgBuf *msgbuf, char *line)
 static int
 msgbuf_has_matching_tags(struct MsgBuf *msgbuf, unsigned int capmask)
 {
-	int i;
-
-	for (i = 0; i < msgbuf->n_tags; i++)
+	for (size_t i = 0; i < msgbuf->n_tags; i++)
 	{
 		if ((msgbuf->tags[i].capmask & capmask) != 0)
 			return 1;
@@ -131,14 +128,12 @@ msgbuf_has_matching_tags(struct MsgBuf *msgbuf, unsigned int capmask)
 static void
 msgbuf_unparse_tags(char *buf, size_t buflen, struct MsgBuf *msgbuf, unsigned int capmask)
 {
-	int i;
-
 	if (!msgbuf_has_matching_tags(msgbuf, capmask))
 		return;
 
 	*buf = '@';
 
-	for (i = 0; i < msgbuf->n_tags; i++)
+	for (size_t i = 0; i < msgbuf->n_tags; i++)
 	{
 		if ((msgbuf->tags[i].capmask & capmask) == 0)
 			continue;
@@ -185,11 +180,9 @@ msgbuf_unparse_prefix(char *buf, size_t buflen, struct MsgBuf *msgbuf, unsigned
 int
 msgbuf_unparse(char *buf, size_t buflen, struct MsgBuf *msgbuf, unsigned int capmask)
 {
-	int i;
-
 	msgbuf_unparse_prefix(buf, buflen, msgbuf, capmask);
 
-	for (i = msgbuf->cmd != NULL ? 0 : 1; i < msgbuf->n_para; i++)
+	for (size_t i = msgbuf->cmd != NULL ? 0 : 1; i < msgbuf->n_para; i++)
 	{
 		if (i == (msgbuf->n_para - 1))
 		{
diff --git a/ircd/parse.c b/ircd/parse.c
index fd490367..e26afd13 100644
--- a/ircd/parse.c
+++ b/ircd/parse.c
@@ -246,13 +246,13 @@ handle_command(struct Message *mptr, struct MsgBuf *msgbuf_p, struct Client *cli
 
 		sendto_realops_snomask(SNO_GENERAL, L_ALL,
 				     "Dropping server %s due to (invalid) command '%s'"
-				     " with only %zu arguments (expecting %d).",
+				     " with only %zu arguments (expecting %zu).",
 				     client_p->name, mptr->cmd, msgbuf_p->n_para, ehandler.min_para);
 		ilog(L_SERVER,
-		     "Insufficient parameters (%zu < %d) for command '%s' from %s.",
+		     "Insufficient parameters (%zu < %zu) for command '%s' from %s.",
 		     msgbuf_p->n_para, ehandler.min_para, mptr->cmd, client_p->name);
 		snprintf(squitreason, sizeof squitreason,
-				"Insufficient parameters (%zu < %d) for command '%s'",
+				"Insufficient parameters (%zu < %zu) for command '%s'",
 				msgbuf_p->n_para, ehandler.min_para, mptr->cmd);
 		exit_client(client_p, client_p, client_p, squitreason);
 		return (-1);
@@ -278,7 +278,7 @@ handle_encap(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *so
 	ehandler = mptr->handlers[ENCAP_HANDLER];
 	handler = ehandler.handler;
 
-	if(parc < ehandler.min_para ||
+	if((size_t)parc < ehandler.min_para ||
 	   (ehandler.min_para && EmptyString(parv[ehandler.min_para - 1])))
 		return;
 
diff --git a/ircd/send.c b/ircd/send.c
index 6eec553a..a733f049 100644
--- a/ircd/send.c
+++ b/ircd/send.c
@@ -223,7 +223,7 @@ linebuf_put_msgvbuf(struct MsgBuf *msgbuf, buf_head_t *linebuf, unsigned int cap
 	rb_linebuf_newbuf(linebuf);
 	msgbuf_unparse_prefix(buf, sizeof buf, msgbuf, capmask);
 	rb_linebuf_putprefix(linebuf, pattern, va, buf);
-} 
+}
 
 /* linebuf_put_msgbuf
  *
@@ -505,7 +505,7 @@ sendto_channel_flags(struct Client *one, int type, struct Client *source_p,
 	struct membership *msptr;
 	rb_dlink_node *ptr;
 	rb_dlink_node *next_ptr;
-	unsigned int current_capmask = 0;
+	int current_capmask = 0;
 	struct MsgBuf msgbuf;
 
 	rb_linebuf_newbuf(&rb_linebuf_local);
diff --git a/ircd/sslproc.c b/ircd/sslproc.c
index b5c0ab29..6d53caf3 100644
--- a/ircd/sslproc.c
+++ b/ircd/sslproc.c
@@ -452,7 +452,6 @@ ssl_process_certfp(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf)
 	uint32_t len;
 	uint8_t *certfp;
 	char *certfp_string;
-	int i;
 
 	if(ctl_buf->buflen > 5 + RB_SSL_CERTFP_LEN)
 		return;		/* bogus message..drop it.. XXX should warn here */
@@ -465,7 +464,7 @@ ssl_process_certfp(ssl_ctl_t * ctl, ssl_ctl_buf_t * ctl_buf)
 		return;
 	rb_free(client_p->certfp);
 	certfp_string = rb_malloc(len * 2 + 1);
-	for(i = 0; i < len; i++)
+	for(uint32_t i = 0; i < len; i++)
 		snprintf(certfp_string + 2 * i, 3, "%02x",
 				certfp[i]);
 	client_p->certfp = certfp_string;
@@ -478,7 +477,7 @@ ssl_process_cmd_recv(ssl_ctl_t * ctl)
 	static const char *no_ssl_or_zlib = "ssld has neither SSL/TLS or zlib support killing all sslds";
 	rb_dlink_node *ptr, *next;
 	ssl_ctl_buf_t *ctl_buf;
-	int len;
+	unsigned long len;
 
 	if(ctl->dead)
 		return;
diff --git a/modules/m_map.c b/modules/m_map.c
index 8675fed8..6ba05e1f 100644
--- a/modules/m_map.c
+++ b/modules/m_map.c
@@ -157,7 +157,7 @@ flattened_map(struct Client *client_p)
 	rb_dlink_node *ptr;
 	struct Client *target_p;
 	int i, len;
-	int cnt = 0;
+	unsigned long cnt = 0;
 
 	/* First display me as the root */
 	rb_strlcpy(buf, me.name, BUFSIZE);