diff --git a/administrator/components/com_media/config.xml b/administrator/components/com_media/config.xml
index 6ef06cfff1e74..294fe96f9f790 100644
--- a/administrator/components/com_media/config.xml
+++ b/administrator/components/com_media/config.xml
@@ -14,9 +14,11 @@
 
 		<field
 			name="upload_maxsize"
-			type="text"
+			type="number"
 			label="COM_MEDIA_FIELD_MAXIMUM_SIZE_LABEL"
 			description="COM_MEDIA_FIELD_MAXIMUM_SIZE_DESC" 
+			validate="number"
+			min="0"
 			size="50"
 			default="10"
 		/>