diff -Nrup a/src/command.cpp b/src/command.cpp
--- a/src/command.cpp	2015-05-09 04:59:46.000000000 -0600
+++ b/src/command.cpp	2019-09-24 11:37:06.667911307 -0600
@@ -303,7 +303,7 @@ bool parse_comment(const string&line){
 		uint val=find_command(command_part,beaut),togglebit;
 		if(val!=(uint)-1&&val!=OFF)_commandState.beautifier=true;
 		switch(val){
-		case -1:
+		case -1u:
 			IssueMessage(0,COMMAND_INVALID_ARG,gen[BEAUTIFY].name);
 			return true;
 		case OFF:_commandState.beautifier=false;break;