diff --git a/Zend/zend.c b/Zend/zend.c
index 7177f13c578..a38201baeb3 100644
--- a/Zend/zend.c
+++ b/Zend/zend.c
@@ -1784,7 +1784,7 @@ void zend_shutdown_error_notify_callbacks()
 	zend_llist_destroy(&zend_error_notify_callbacks);
 }
 
-void zend_register_error_notify_callback(zend_error_notify_cb cb)
+ZEND_API void zend_register_error_notify_callback(zend_error_notify_cb cb)
 {
 	zend_llist_add_element(&zend_error_notify_callbacks, &cb);
 }
diff --git a/Zend/zend.h b/Zend/zend.h
index 956d4532df7..659466322e4 100644
--- a/Zend/zend.h
+++ b/Zend/zend.h
@@ -354,8 +354,7 @@ ZEND_API void zend_restore_error_handling(zend_error_handling *saved);
 typedef void (*zend_error_notify_cb)(int type, const char *error_filename, uint32_t error_lineno, zend_string *message);
 
 BEGIN_EXTERN_C()
-
-void zend_register_error_notify_callback(zend_error_notify_cb callback);
+ZEND_API void zend_register_error_notify_callback(zend_error_notify_cb callback);
 void zend_startup_error_notify_callbacks();
 void zend_shutdown_error_notify_callbacks();
 void zend_error_notify_all_callbacks(int type, const char *error_filename, uint32_t error_lineno, zend_string *message);