diff --git a/debian/scripts/koha-plack b/debian/scripts/koha-plack
index 72e21f43e2..5d2799a3d4 100755
--- a/debian/scripts/koha-plack
+++ b/debian/scripts/koha-plack
@@ -231,22 +231,6 @@ set_action()
     fi
 }
 
-adjust_paths()
-{
-    # Optionally use alternative paths for a dev install
-    adjust_paths_dev_install $1
-
-    # PERL5LIB has been read from etc/default, add lib/installer
-    # export some vars (for plack.psgi)
-    export KOHA_HOME
-    if [ "$DEV_INSTALL" = "" ]; then
-        export PERL5LIB=$PERL5LIB:$KOHA_HOME/lib/installer
-    else
-        export DEV_INSTALL
-        export PERL5LIB=$PERL5LIB:$KOHA_HOME/installer
-    fi
-}
-
 STARMAN=$(which starman)
 op=""
 quiet="no"
@@ -292,7 +276,9 @@ if [ $# -gt 0 ]; then
 
         if is_instance $name; then
 
-            adjust_paths $name
+            adjust_paths_dev_install $name
+            export DEV_INSTALL KOHA_HOME PERL5LIB=$PERL5LIB:$KOHA_HOME/installer:$KOHA_HOME/lib/installer
+
             case $op in
                 "start")
                     start_plack $name