diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 5ca2df790d3c..b028a48b0e76 100644
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -555,8 +555,7 @@ char *expand_string(const char *in)
 
 static bool is_end_of_token(char c)
 {
-	/* Why are '.' and '/' valid characters for symbols? */
-	return !(isalnum(c) || c == '_' || c == '-' || c == '.' || c == '/');
+	return !(isalnum(c) || c == '_' || c == '-');
 }
 
 /*
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index f8bd84714e00..90d2f37159dc 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -160,7 +160,7 @@ n	[A-Za-z0-9_-]
 		BEGIN(STRING);
 	}
 	\n	BEGIN(INITIAL); return T_EOL;
-	({n}|[/.])+	{
+	{n}+	{
 		const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
 		if (id && id->flags & TF_PARAM) {
 			yylval.id = id;
@@ -170,7 +170,7 @@ n	[A-Za-z0-9_-]
 		yylval.string = text;
 		return T_WORD;
 	}
-	({n}|[/.$])+	{
+	({n}|$)+	{
 		/* this token includes at least one '$' */
 		yylval.string = expand_token(yytext, yyleng);
 		if (strlen(yylval.string))