diff --git a/lib/truffle/truffle/patches/nokogiri_patches.rb b/lib/truffle/truffle/patches/nokogiri_patches.rb
index 4f2cfd5efd14..743e6d6cb0b0 100644
--- a/lib/truffle/truffle/patches/nokogiri_patches.rb
+++ b/lib/truffle/truffle/patches/nokogiri_patches.rb
@@ -79,6 +79,11 @@ def self.using_system_libraries?
           replacement: "VALUE thing = Qnil;\nVALUE errors = rb_ary_new();",
           predicate: -> { using_system_libraries? }
         },
+        {
+          match: 'VALUE retVal = Qnil;',
+          replacement: "VALUE retVal = Qnil;\nVALUE errors = rb_ary_new();",
+          predicate: -> { using_system_libraries? }
+        },
         {
           match: 'xmlSetStructuredErrorFunc(NULL, Nokogiri_error_raise);',
           replacement: 'xmlSetStructuredErrorFunc(errors, Nokogiri_error_array_pusher);',