diff --git a/crypto/ca-certificates/PRE_BUILD b/crypto/ca-certificates/PRE_BUILD
index 66e6ea6d9..def696e80 100644
--- a/crypto/ca-certificates/PRE_BUILD
+++ b/crypto/ca-certificates/PRE_BUILD
@@ -1,3 +1,3 @@
 default_pre_build &&
 
-sedit "s:c_rehash \.:openssl certhash .:;/run-parts/s: -- : :" sbin/update-ca-certificates
+sedit "s:c_rehash \.:( \0 || openssl certhash . ):;/run-parts/s: -- : :" sbin/update-ca-certificates