Index: src_plugins/drc_query/drc_query.conf
===================================================================
--- src_plugins/drc_query/drc_query.conf	(revision 35643)
+++ src_plugins/drc_query/drc_query.conf	(revision 35644)
@@ -152,6 +152,17 @@
 						}
 					}
 
+					ha:invalid_text_chars {
+						type = text_char
+						title = Invalid character in text
+						desc = Text object contains character(s) that will not render with the given font
+						query = {
+rule invalid_text_chars
+assert @.type == TEXT && (text_invalid_chars(@) > 0) \\
+	thus violation(DRCGRP1, @, DRCTEXT, "Number of invalid characters:", DRCTEXT, text_invalid_chars(@))
+						}
+					}
+
 				}
 			}
 		}