diff --git a/code/parser/lex_source.txt b/code/parser/lex_source.txt
index bf8c3094..0cca5359 100644
--- a/code/parser/lex_source.txt
+++ b/code/parser/lex_source.txt
@@ -312,7 +312,7 @@ varname		[a-zA-Z0-9_\"]+
 [\r\n]+							{ if (prev_yylex != TOKEN_EOL) YYLEX(TOKEN_EOL); }
 [ \t]							{ ; }
 
-[0-9]+									{
+[0-9^`]+									{
 											char* p = nullptr;
 											yylval.s.val.intValue = std::strtol(yytext, &p, 10);
 											YYLEX(TOKEN_INTEGER);