--- seamonkey-2.53.5b1/seamonkey-2.53.5/mozilla/old-configure.in.orig	2020-10-20 22:17:58.000000000 +0300
+++ seamonkey-2.53.5b1/seamonkey-2.53.5/mozilla/old-configure.in	2020-11-11 22:12:32.072002769 +0300
@@ -1792,6 +1792,7 @@
 fi
 
 NSS_CFLAGS="$NSS_CFLAGS -I${DIST}/include/nss"
+NSS_CFLAGS="$NSS_CFLAGS -DNSS_PKCS11_3_0_STRICT"
 if test -z "$MOZ_SYSTEM_NSS"; then
    case "${OS_ARCH}" in
         # Only few platforms have been tested with GYP