--- squashfs-tools/mksquashfs.c
+++ squashfs-tools/mksquashfs.c
@@ -2254,26 +2254,26 @@
 	int spaces = columns - used - hashes;
 
 	if(current > max) {
-		printf("%lld %lld\n", current, max);
+		fprintf(stderr, "%lld %lld\n", current, max);
 		return;
 	}
 
 	if(columns - used < 0)
 		return;
 
-	printf("\r[");
+	fprintf(stderr,	"\r[");
 
 	while (hashes --)
-		putchar('=');
+		putc('=', stderr);
 
-	putchar(rotate_list[rotate]);
+	putc(rotate_list[rotate], stderr);
 
 	while(spaces --)
-		putchar(' ');
+		putc(' ', stderr);
 
-	printf("] %*lld/%*lld", max_digits, current, max_digits, max);
-	printf(" %3lld%%", current * 100 / max);
-	fflush(stdout);
+	fprintf(stderr, "] %*lld/%*lld", max_digits, current, max_digits, max);
+	fprintf(stderr, " %3lld%%", current * 100 / max);
+	fflush(stderr);
 }