diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 35c08ecaad17..96110ea41cf3 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -535,7 +535,7 @@ int conf_write(const char *name)
 	struct menu *menu;
 	const char *basename;
 	const char *str;
-	char dirname[128], tmpname[128], newname[128];
+	char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
 	enum symbol_type type;
 	time_t now;
 	int use_timestamp = 1;
@@ -654,7 +654,7 @@ int conf_write(const char *name)
 static int conf_split_config(void)
 {
 	const char *name;
-	char path[128];
+	char path[PATH_MAX+1];
 	char *s, *d, c;
 	struct symbol *sym;
 	struct stat sb;