diff --git a/hooks/conf_regen/10-apt b/hooks/conf_regen/10-apt
index bdd6d399c..a28a869ab 100755
--- a/hooks/conf_regen/10-apt
+++ b/hooks/conf_regen/10-apt
@@ -68,7 +68,10 @@ do_post_regen() {
     fi
 
     # Make sure php7.4 is the default version when using php in cli
-    update-alternatives --set php /usr/bin/php7.4
+    if test -e /usr/bin/php$YNH_DEFAULT_PHP_VERSION
+    then
+        update-alternatives --set php /usr/bin/php$YNH_DEFAULT_PHP_VERSION
+    fi
 }
 
 do_$1_regen ${@:2}