diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 85b40b8cff8..36e8098d369 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3087,10 +3087,12 @@ let
 
   php_xcache = callPackage ../development/libraries/php-xcache { };
 
-  phpXdebug_5_3 = callPackage ../development/interpreters/php-xdebug {
+  phpXdebug_5_3 = lowPrio (callPackage ../development/interpreters/php-xdebug {
     php = php53;
-  };
+  });
+
   phpXdebug_5_4 = callPackage ../development/interpreters/php-xdebug { };
+
   phpXdebug = phpXdebug_5_4;
 
   picolisp = callPackage ../development/interpreters/picolisp {};