diff --git a/databases/rubygem-mysql/files/patch-ext-mysql_api-extconf.rb b/databases/rubygem-mysql/files/patch-ext-mysql_api-extconf.rb
index 945358044a3f..5a81b1eb5fb3 100644
--- a/databases/rubygem-mysql/files/patch-ext-mysql_api-extconf.rb
+++ b/databases/rubygem-mysql/files/patch-ext-mysql_api-extconf.rb
@@ -1,11 +1,11 @@
 --- ext/mysql_api/extconf.rb.orig	2024-01-21 14:47:39 UTC
 +++ ext/mysql_api/extconf.rb
 @@ -76,6 +76,8 @@ IO.foreach('confout') do |l|
    next unless l =~ /errmsg\.h|mysqld_error\.h/
    fn = l.split(/\"/)[1]
    IO.foreach(fn) do |m|
-+    next if m == 'ER_UNKNOWN_ERROR_CODE'
++    next if m =~ /ER_UNKNOWN_ERROR_CODE/
 +
      if m =~ /^#define\s+([CE]R_[0-9A-Z_]+)/ then
        error_syms << $1
      end