diff --git a/channel/channelapp/source/appentry.c b/channel/channelapp/source/appentry.c
index d488ff4..374957f 100644
--- a/channel/channelapp/source/appentry.c
+++ b/channel/channelapp/source/appentry.c
@@ -166,7 +166,7 @@ void app_entry_set_sort(app_sort sort) {
 static app_entry *app_entry_load_single (const char *dirname) {
 	app_entry *entry;
 	app_entry_type type;
-	char tmp[MAXPATHLEN + 32];
+	char tmp[PATH_MAX + 32];
 	struct stat st;
 
 	type = AET_BOOT_ELF;
diff --git a/channel/channelapp/source/loader.c b/channel/channelapp/source/loader.c
index 7323285..4ca4044 100644
--- a/channel/channelapp/source/loader.c
+++ b/channel/channelapp/source/loader.c
@@ -703,8 +703,8 @@ static void * ld_load_func (void *arg) {
 // public loading function
 
 void loader_load(loader_result *result, view *sub_view, app_entry *entry) {
-	char caption[MAXPATHLEN + 32];
-	char filename[MAXPATHLEN];
+	char caption[PATH_MAX + 32];
+	char filename[PATH_MAX];
 
 	ld_load_arg ta;
 	s32 res;
diff --git a/channel/channelapp/source/loader.h b/channel/channelapp/source/loader.h
index 3b8158f..52226ba 100644
--- a/channel/channelapp/source/loader.h
+++ b/channel/channelapp/source/loader.h
@@ -2,6 +2,7 @@
 #define _LOADER_H_
 
 #include <unistd.h>
+#include <limits.h>
 
 #include <gctypes.h>
 
@@ -25,7 +26,7 @@ typedef struct {
 	char args[ARGS_MAX_LEN];
 	u32 args_len;
 
-	char dirname[MAXPATHLEN];
+	char dirname[PATH_MAX];
 	u32 bytes;
 } loader_result;
 
diff --git a/channel/channelapp/source/main.c b/channel/channelapp/source/main.c
index 29a3bdd..4fa3bf6 100644
--- a/channel/channelapp/source/main.c
+++ b/channel/channelapp/source/main.c
@@ -295,7 +295,7 @@ void main_real(void) {
 	u64 frame;
 	bool exit_about;
 
-	char charbuf[MAXPATHLEN];
+	char charbuf[PATH_MAX];
 
 	load_text();
 
diff --git a/channel/channelapp/source/manage.c b/channel/channelapp/source/manage.c
index 53644e8..58dc412 100644
--- a/channel/channelapp/source/manage.c
+++ b/channel/channelapp/source/manage.c
@@ -35,7 +35,7 @@ s32 dir_exists(char *dirname) {
 }
 
 static s32 mkdir_hier(char *dirname) {
-	char dir[MAXPATHLEN];
+	char dir[PATH_MAX];
 	size_t i;
 	s32 res;
 
@@ -84,7 +84,7 @@ static s32 rmdir_hier_iter(const char *dirname) {
 		return -1;
 	}
 
-	char newpath[MAXPATHLEN];
+	char newpath[PATH_MAX];
 
 	while ((de = readdir(d))) {
 		if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, ".."))
@@ -118,7 +118,7 @@ exit:
 }
 
 static s32 rmdir_hier(const char *dirname) {
-	char buf[MAXPATHLEN];
+	char buf[PATH_MAX];
 
 	sprintf(buf, "%s/%s", app_path, dirname);
 
@@ -348,7 +348,7 @@ static bool manage_extract_zip(u8 *data, u32 data_len,
 
 	unz_file_info fi;
 	char filename[256];
-	char sd_filename[MAXPATHLEN];
+	char sd_filename[PATH_MAX];
 	char *p;
 	int fd;
 	
@@ -481,7 +481,7 @@ bool manage_run(view *sub_view, const char *dirname,
 				u8 *data, u32 data_len, u32 bytes) {
 	s32 res;
 	u32 progress = 0;
-	char caption[MAXPATHLEN];
+	char caption[PATH_MAX];
 
 	view *v;