diff --git a/sys/fs/fat/fat.c b/sys/fs/fat/fat.c
index 8ce38e4..9d87c30 100644
--- a/sys/fs/fat/fat.c
+++ b/sys/fs/fat/fat.c
@@ -97,7 +97,7 @@
   FL_FILE *_file = (FL_FILE*) fd->res;
 
   if (size == 0) {
-    kprintf("ZERO");
+    kprintf("ZERO: %s", _file->filename);
     return (-1);
   }