[minor] update font awesome icons
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index 3ebe6f0..95f6c0b 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -6,7 +6,7 @@
 app_title = "ERPNext"
 app_publisher = "Frappe Technologies Pvt. Ltd."
 app_description = """ERP made simple"""
-app_icon = "icon-th"
+app_icon = "fa fa-th"
 app_color = "#e74c3c"
 app_email = "info@erpnext.com"
 app_license = "GNU General Public License (v3)"