diff --git a/util/mkdef.pl b/util/mkdef.pl
index f067ff52..f318530e 100755
--- a/util/mkdef.pl
+++ b/util/mkdef.pl
@@ -331,7 +331,6 @@ $crypto.=" include/openssl/gmsof.h";
 $crypto.=" include/openssl/kdf2.h";
 $crypto.=" include/openssl/otp.h";
 $crypto.=" include/openssl/paillier.h";
-$crypto.=" include/openssl/pem3.h";
 $crypto.=" include/openssl/saf.h";
 $crypto.=" include/openssl/sdf.h";
 $crypto.=" include/openssl/sgd.h";