diff --git a/lib/common.sh b/lib/common.sh
index 65b0b1a..30722dd 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -10,6 +10,7 @@ TEST_USER="package_checker"
 
 ARCH=${ARCH:-amd64}
 DIST=${DIST:-bullseye}
+DEFAULT_PHP_VERSION=${DEFAULT_PHP_VERSION:-7.4}
 
 # YunoHost version: stable, testing or unstable
 YNH_BRANCH=${YNH_BRANCH:-stable}
@@ -20,8 +21,6 @@ LXC_NAME="ynh-appci-$DIST-$ARCH-$YNH_BRANCH-test-${WORKER_ID}"
 
 readonly lock_file="./pcheck-${WORKER_ID}.lock"
 
-DEFAULT_PHP_VERSION="7.4"
-
 #=================================================
 # LXC helpers
 #=================================================