diff --git a/share/skins2/skin.dtd b/share/skins2/skin.dtd
index 3faa609981aa0f0ec9410790f081ff7126840c60..bcbabb6ff405923cafaa36b2c5d921e778025494 100644
--- a/share/skins2/skin.dtd
+++ b/share/skins2/skin.dtd
@@ -28,6 +28,7 @@
         alphacolor  CDATA   #REQUIRED
         nbframes    CDATA   "1"
         fps         CDATA   "0"
+        loop        CDATA   "0"
     >
 <!ELEMENT SubBitmap EMPTY>
     <!ATTLIST SubBitmap
@@ -38,6 +39,7 @@
         height      CDATA   #REQUIRED
         nbframes    CDATA   "1"
         fps         CDATA   "0"
+        loop        CDATA   "0"
     >
 <!ELEMENT Font EMPTY>
     <!ATTLIST Font