diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 0a1ccc3..4e878dd 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -141,7 +141,7 @@
 			break;
 		}
 		conf_warning("symbol value '%s' invalid for %s", p, sym->name);
-		break;
+		return 1;
 	case S_OTHER:
 		if (*p != '"') {
 			for (p2 = p; *p2 && !isspace(*p2); p2++)