1 files changed, 1 insertions, 1 deletions
diff --git a/version.c b/version.c
index 1da18951c8..3a1d1fc3ff 100644
--- a/version.c
+++ b/version.c
@@ -14,7 +14,7 @@
 #include <stdio.h>
 
 #define PRINT(type) puts(ruby_##type)
-#define MKSTR(type) rb_obj_freeze(rb_str_new(ruby_##type, sizeof(ruby_##type)-1))
+#define MKSTR(type) rb_obj_freeze(rb_usascii_str_new(ruby_##type, sizeof(ruby_##type)-1))
 
 const char ruby_version[] = RUBY_VERSION;
 const char ruby_release_date[] = RUBY_RELEASE_DATE;