diff --git a/ext/intl/spoofchecker/spoofchecker_class.h b/ext/intl/spoofchecker/spoofchecker_class.h
index d6f2c2d5436..c0cb0c5327c 100644
--- a/ext/intl/spoofchecker/spoofchecker_class.h
+++ b/ext/intl/spoofchecker/spoofchecker_class.h
@@ -78,6 +78,8 @@ extern zend_class_entry *Spoofchecker_ce_ptr;
         RETURN_FALSE;                                                           \
     }                                                                           \
 
+#if U_ICU_VERSION_MAJOR_NUM >= 58
 #define SPOOFCHECKER_DEFAULT_RESTRICTION_LEVEL USPOOF_HIGHLY_RESTRICTIVE
+#endif
 
 #endif // #ifndef SPOOFCHECKER_CLASS_H