diff --git a/calendar/templates/mobile/app.css b/calendar/templates/mobile/app.css
index 8ab4408888..96775aaea9 100644
--- a/calendar/templates/mobile/app.css
+++ b/calendar/templates/mobile/app.css
@@ -2767,4 +2767,10 @@ div#calendar-container div.calendar table tbody tr.rowhilite td {
     vertical-align: top;
     width: 100%;
   }
+  #calendar-toolbar_app_header {
+    height: 17px;
+  }
+  #calendar-toolbar .egw_fw_ui_app_header_container {
+    min-height: 20px;
+  }
 }
diff --git a/calendar/templates/mobile/app.less b/calendar/templates/mobile/app.less
index 53604450d1..0239772711 100644
--- a/calendar/templates/mobile/app.less
+++ b/calendar/templates/mobile/app.less
@@ -96,4 +96,6 @@
 		vertical-align: top;
 		width: 100%;
 	}
+	#calendar-toolbar_app_header {height: 17px;}
+	#calendar-toolbar .egw_fw_ui_app_header_container {min-height:20px;}
 }