--- a/lib/update.utils	Thu Dec 19 00:55:22 2013 +0200
+++ b/lib/update.utils	Thu Dec 19 01:17:48 2013 +0200
@@ -81,11 +81,13 @@
     done
 }
 
-## List names of files in dirs..
+## List names of dirs in dir:
 function list_dirs {
-    for dir in "$@"; do
-        for file in $dir/*; do
-            echo -n "${file#$dir/}"
-        done
+    local dir="$1"
+
+    for file in $dir/*; do
+        [ -d "$file" ] || continue
+
+        echo -n "${file#$dir/} "
     done
 }