diff --git a/basis/help/html/stylesheet.css b/basis/help/html/stylesheet.css
index 6702245b64..60a8edda26 100644
--- a/basis/help/html/stylesheet.css
+++ b/basis/help/html/stylesheet.css
@@ -24,6 +24,8 @@ input {
 
 img {
     vertical-align: middle;
+    width: 16px;
+    height: 16px;
 }
 
 table {