diff --git a/libraries/libapparmor/src/scanner.l b/libraries/libapparmor/src/scanner.l
index 3657243e0..a81f2155e 100644
--- a/libraries/libapparmor/src/scanner.l
+++ b/libraries/libapparmor/src/scanner.l
@@ -194,6 +194,7 @@ yy_flex_debug = 0;
 	{period}		{ return(TOK_PERIOD); }
 	{open_paren}		{ return(TOK_OPEN_PAREN); }
 	{close_paren}		{ yy_pop_state(yyscanner); return(TOK_CLOSE_PAREN); }
+	.			{ BEGIN(unknown_message); yyless(0); /* dump the rest */ }
 }
 
 <sub_id>{