diff --git a/include/mruby/version.h b/include/mruby/version.h
index 3abbb87b1..d451dfb31 100644
--- a/include/mruby/version.h
+++ b/include/mruby/version.h
@@ -18,16 +18,17 @@
 
 #define MRUBY_AUTHOR "mruby developers"
 
-#define STRINGIZE0(expr) #expr
-#define STRINGIZE(expr) STRINGIZE0(expr)
+#define MRB_STRINGIZE0(expr) #expr
+#define MRB_STRINGIZE(expr) MRB_STRINGIZE0(expr)
 
-#define MRUBY_DESCRIPTION             \
-    "mruby " MRUBY_VERSION             \
-    " (" MRUBY_RELEASE_DATE ") " 
-#define MRUBY_COPYRIGHT               \
-    "mruby - Copyright (c) "          \
-    STRINGIZE(MRUBY_BIRTH_YEAR)"-"    \
-    STRINGIZE(MRUBY_RELEASE_YEAR)" "  \
-    MRUBY_AUTHOR
+#define MRUBY_DESCRIPTION      \
+  "mruby " MRUBY_VERSION       \
+  " (" MRUBY_RELEASE_DATE ") " \
+
+#define MRUBY_COPYRIGHT                \
+  "mruby - Copyright (c) "             \
+  MRB_STRINGIZE(MRUBY_BIRTH_YEAR)"-"   \
+  MRB_STRINGIZE(MRUBY_RELEASE_YEAR)" " \
+  MRUBY_AUTHOR                         \
 
 #endif  /* MRUBY_VERSION_H */