Index: uspace/lib/ext4/src/superblock.c
===================================================================
--- uspace/lib/ext4/src/superblock.c	(revision 6ea5e7a007c27f115240f1c9d0b284b05315abca)
+++ uspace/lib/ext4/src/superblock.c	(revision 663f445f6ae6d51eff8cb7bcc345d4a411d3ff7e)
@@ -889,5 +889,5 @@
 	size_t i;
 	size_t wi;
-	wchar_t ch;
+	char32_t ch;
 	errno_t rc;
 
@@ -896,5 +896,5 @@
 	while (sb->volume_name[i] != '\0' && i < sizeof(sb->volume_name)) {
 		/* ISO 8859-1 codes map to identical Unicode code points */
-		ch = (wchar_t)(uint8_t)sb->volume_name[i];
+		ch = (char32_t)(uint8_t)sb->volume_name[i];
 		rc = chr_encode(ch, buf, &wi, bufsz - 1);
 		if (rc != EOK)
@@ -917,5 +917,5 @@
 {
 	size_t off;
-	wchar_t ch;
+	char32_t ch;
 	size_t wi;