diff --git a/scripts/generate_errors.pl b/scripts/generate_errors.pl
index b2d038e..5ea8381 100755
--- a/scripts/generate_errors.pl
+++ b/scripts/generate_errors.pl
@@ -45,7 +45,7 @@
 
     my $define_name = $module_name;
     $define_name = "X509_PARSE" if ($define_name eq "X509");
-    $define_name = "X509_PARSE" if ($define_name eq "ASN1");
+    $define_name = "ASN1_PARSE" if ($define_name eq "ASN1");
     $define_name = "SSL_TLS" if ($define_name eq "SSL");
 
     my $include_name = $module_name;