diff --git a/php_v8js_macros.h b/php_v8js_macros.h
index 9461453..2318d81 100644
--- a/php_v8js_macros.h
+++ b/php_v8js_macros.h
@@ -66,14 +66,6 @@ extern "C" {
 #define V8JS_GET_CLASS_NAME(var, obj) \
 	v8::String::Utf8Value var(obj->GetConstructorName());
 
-/* method signatures of zend_update_property and zend_read_property were
- * declared as 'char *' instead of 'const char *' before PHP 5.4 */
-#if ZEND_MODULE_API_NO >= 20100525
-# define V8JS_CONST
-#else
-# define V8JS_CONST (char *)
-#endif
-
 /* Options */
 #define V8JS_FLAG_NONE			(1<<0)
 #define V8JS_FLAG_FORCE_ARRAY	(1<<1)
diff --git a/v8js_object_export.cc b/v8js_object_export.cc
index 17fa11a..6e0b55c 100644
--- a/v8js_object_export.cc
+++ b/v8js_object_export.cc
@@ -621,7 +621,7 @@ v8::Local<v8::Value> v8js_named_property_callback(v8::Local<v8::String> property
 			if(!property_info ||
 			   (property_info != ZEND_WRONG_PROPERTY_INFO &&
 				property_info->flags & ZEND_ACC_PUBLIC)) {
-				zval *property_val = zend_read_property(NULL, &zobject, V8JS_CONST name, name_len, true, &php_value TSRMLS_CC);
+				zval *property_val = zend_read_property(NULL, &zobject, name, name_len, true, &php_value TSRMLS_CC);
 				// special case uninitialized_zval_ptr and return an empty value
 				// (indicating that we don't intercept this property) if the
 				// property doesn't exist.
@@ -656,7 +656,7 @@ v8::Local<v8::Value> v8js_named_property_callback(v8::Local<v8::String> property
 				if(!property_info ||
 				   (property_info != ZEND_WRONG_PROPERTY_INFO &&
 					property_info->flags & ZEND_ACC_PUBLIC)) {
-					zend_update_property(scope, &zobject, V8JS_CONST name, name_len, &php_value TSRMLS_CC);
+					zend_update_property(scope, &zobject, name, name_len, &php_value TSRMLS_CC);
 					ret_value = set_value;
 				}
 				else if (ce->__set