diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index b3f60c938..28d9e4a09 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -1675,8 +1675,9 @@ function rcmail_address_string($input, $max=null, $linked=false, $addicon=null,
                             rcmail_output::JS_OBJECT_NAME, rcube::JQ($string)),
                     ),
                     html::img(array(
-                        'src' => $RCMAIL->output->abs_url($addicon, true),
-                        'alt' => "Add contact",
+                        'src'   => $RCMAIL->output->abs_url($addicon, true),
+                        'alt'   => "Add contact",
+                        'class' => 'noselect',
                 )));
             }
         }
diff --git a/skins/classic/common.css b/skins/classic/common.css
index 2773cb100..54b1c9cc9 100644
--- a/skins/classic/common.css
+++ b/skins/classic/common.css
@@ -161,6 +161,15 @@ img
   display: none;
 }
 
+.noselect
+{
+  user-select: none;
+  -moz-user-select: none;
+  -khtml-user-select: none;
+  -ms-user-select: none;
+  -webkit-user-select: none;
+}
+
 /* fixes vertical alignment of checkboxes and labels */
 label input,
 label span
diff --git a/skins/larry/styles.css b/skins/larry/styles.css
index 5f6f095eb..143c135a6 100644
--- a/skins/larry/styles.css
+++ b/skins/larry/styles.css
@@ -98,6 +98,14 @@ label input + span {
 	vertical-align: middle;
 }
 
+.noselect {
+	user-select: none;
+	-moz-user-select: none;
+	-khtml-user-select: none;
+	-ms-user-select: none;
+	-webkit-user-select: none;
+}
+
 /*** buttons ***/
 
 input.button {