diff --git a/theme/standard/styles_layout.css b/theme/standard/styles_layout.css
index 7a72b25b3d6..9fe77248e2e 100644
--- a/theme/standard/styles_layout.css
+++ b/theme/standard/styles_layout.css
@@ -113,7 +113,7 @@ a img {
 
 img.userpicture,
 img.grouppicture {
-  border: 0 solid
+  border: 0;
 }
 
 .notifyproblem {
@@ -1925,6 +1925,12 @@ body#grade-index .grades .weighted {
  *** Message
  ***/
 
+
+#message-user .userpicture {
+  width: 100px;
+  height: 100px;
+}
+
 .message-discussion-noframes #userinfo .userpicture {
   float:left;
 }