diff --git a/formulaires/joindre_document.html b/formulaires/joindre_document.html
index d0753cdb51b044811a6ce3e3e0c8bdf8780d4de3..8499abf29e76db183095be7d8096d5dd3d8d2181 100644
--- a/formulaires/joindre_document.html
+++ b/formulaires/joindre_document.html
@@ -19,5 +19,5 @@
 	</div></form>
 </div>]
 [(#ENV{_galerie,''}|oui)
-		[(#INCLURE{fond=#ENV{_galerie}, env, ajax})]
+		[(#INCLURE{fond=#ENV{_galerie}|spip_sanitize_from_request{_galerie,vide}, env, ajax})]
 ]
diff --git a/prive/squelettes/inclure/mediatheque-navigation.html b/prive/squelettes/inclure/mediatheque-navigation.html
index eac4e0cc11f301e13b3c7771c9d3f66601fb62f0..28ec3ebbf0a7bdd679900cb443125b9331521848 100644
--- a/prive/squelettes/inclure/mediatheque-navigation.html
+++ b/prive/squelettes/inclure/mediatheque-navigation.html
@@ -57,7 +57,7 @@
 <div class='nettoyeur'></div>
 #FORMULAIRE_RECHERCHE_ECRIRE{#GET{self},ajax}
 
-<INCLURE{fond=#ENV{galerie,prive/squelettes/inclure/mediatheque-galerie},ajax=documents,env} />
+<INCLURE{fond=#ENV{galerie,''}|spip_sanitize_from_request{galerie,vide}|sinon{prive/squelettes/inclure/mediatheque-galerie},ajax=documents,env} />
 
 <div class='nettoyeur'></div>
 [(#GET{editable})