diff -Naur mtools-4.0.10-orig/mlabel.c mtools-4.0.10/mlabel.c
--- mtools-4.0.10-orig/mlabel.c	2009-03-03 08:10:11 +0200
+++ mtools-4.0.10/mlabel.c	2009-07-20 15:09:32 +0300
@@ -35,7 +35,10 @@
 	int have_lower, have_upper;
 	wchar_t wbuffer[12];
 
-	strcpy(ans->base,"           ");
+	memset(ans->base, ' ', sizeof ans->base);
+	memset(ans->ext, ' ', sizeof ans->ext);
+	ans->sentinel = '\0';
+
 	len = native_to_wchar(filename, wbuffer, 11, 0, 0);
 	if(len > 11){
 		*mangled = 1;