diff --git a/README.md b/README.md
index a04019f..706a6e6 100644
--- a/README.md
+++ b/README.md
@@ -188,7 +188,7 @@ Some extension has special requirements:
 <!-- #                                                         # -->
 <!-- ########################################################### -->
 | Extension | Requirements |
-|:---:|:---:|
+|---|---|
 | parallel | Requires images with PHP compiled with thread-safety enabled (`zts`). |
 | pthreads | Requires images with PHP compiled with thread-safety enabled (`zts`). |
 <!-- END OF SPECIAL REQUIREMENTS -->