diff --git a/docker/build/build-deps.sh b/docker/build/build-deps.sh
index 16fc25fc6..29868578f 100755
--- a/docker/build/build-deps.sh
+++ b/docker/build/build-deps.sh
@@ -6,8 +6,5 @@
 set -euo pipefail
 
 source "$HOME/.cargo/env"
-# Disable usage of instructions from the ADX extension to avoid incompatibility
-# with old CPUs, see https://gitlab.com/dannywillems/ocaml-bls12-381/-/merge_requests/135/
-export BLST_PORTABLE="yes"
 opam init --bare --disable-sandboxing
 make build-deps
diff --git a/docker/build/build-tezos.sh b/docker/build/build-tezos.sh
index 0848d82c0..e4429b64e 100755
--- a/docker/build/build-tezos.sh
+++ b/docker/build/build-tezos.sh
@@ -8,5 +8,8 @@
 set -euo pipefail
 
 eval "$(opam env)"
+# Disable usage of instructions from the ADX extension to avoid incompatibility
+# with old CPUs, see https://gitlab.com/dannywillems/ocaml-bls12-381/-/merge_requests/135/
+export BLST_PORTABLE="yes"
 make static
 chmod +w octez-*