diff --git a/contribs/gmf/less/map.less b/contribs/gmf/less/map.less
index e4068e7f07df..38d0b6cdfadf 100644
--- a/contribs/gmf/less/map.less
+++ b/contribs/gmf/less/map.less
@@ -99,7 +99,7 @@ button[ngeo-mobile-geolocation] {
     overflow: hidden;
     text-overflow: ellipsis;
     white-space: nowrap;
-    flex: 1;
+    flex: 1 1 auto;
   }
 
   .gmf-thumb {