diff --git a/extensions/libipt_realm.c b/extensions/libipt_realm.c
index 0580610..c9e1760 100644
--- a/extensions/libipt_realm.c
+++ b/extensions/libipt_realm.c
@@ -86,14 +86,14 @@
 			continue;
 
 		/* found valid data */
-		newnm = (struct realmname*)malloc(sizeof(struct realmname));
+		newnm = malloc(sizeof(struct realmname));
 		if (newnm == NULL) {
 			perror("libipt_realm: malloc failed");
 			exit(1);
 		}
 		newnm->id = id;
 		newnm->len = nxt - cur;
-		newnm->name = (char*)malloc(newnm->len + 1);
+		newnm->name = malloc(newnm->len + 1);
 		if (newnm->name == NULL) {
 			perror("libipt_realm: malloc failed");
 			exit(1);
diff --git a/extensions/libxt_multiport.c b/extensions/libxt_multiport.c
index c3c8bb9..9959a20 100644
--- a/extensions/libxt_multiport.c
+++ b/extensions/libxt_multiport.c
@@ -215,7 +215,7 @@
 multiport_parse6(int c, char **argv, int invert, unsigned int *flags,
                  const void *e, struct xt_entry_match **match)
 {
-	const struct ip6t_entry *entry = (const struct ip6t_entry *)e;
+	const struct ip6t_entry *entry = e;
 	return __multiport_parse(c, argv, invert, flags, match,
 	       entry->ipv6.proto, entry->ipv6.invflags);
 }
@@ -278,7 +278,7 @@
 multiport_parse6_v1(int c, char **argv, int invert, unsigned int *flags,
                     const void *e, struct xt_entry_match **match)
 {
-	const struct ip6t_entry *entry = (const struct ip6t_entry *)e;
+	const struct ip6t_entry *entry = e;
 	return __multiport_parse_v1(c, argv, invert, flags, match,
 	       entry->ipv6.proto, entry->ipv6.invflags);
 }
@@ -358,7 +358,7 @@
 static void multiport_print6(const void *ip_void,
                              const struct xt_entry_match *match, int numeric)
 {
-	const struct ip6t_ip6 *ip = (const struct ip6t_ip6 *)ip_void;
+	const struct ip6t_ip6 *ip = ip_void;
 	__multiport_print(match, numeric, ip->proto);
 }
 
@@ -413,7 +413,7 @@
 static void multiport_print6_v1(const void *ip_void,
                                 const struct xt_entry_match *match, int numeric)
 {
-	const struct ip6t_ip6 *ip = (const struct ip6t_ip6 *)ip_void;
+	const struct ip6t_ip6 *ip = ip_void;
 	__multiport_print_v1(match, numeric, ip->proto);
 }
 
@@ -456,7 +456,7 @@
 static void multiport_save6(const void *ip_void,
                             const struct xt_entry_match *match)
 {
-	const struct ip6t_ip6 *ip = (const struct ip6t_ip6 *)ip_void;
+	const struct ip6t_ip6 *ip = ip_void;
 	__multiport_save(match, ip->proto);
 }
 
@@ -505,7 +505,7 @@
 static void multiport_save6_v1(const void *ip_void,
                                const struct xt_entry_match *match)
 {
-	const struct ip6t_ip6 *ip = (const struct ip6t_ip6 *)ip_void;
+	const struct ip6t_ip6 *ip = ip_void;
 	__multiport_save_v1(match, ip->proto);
 }