diff --git a/profiles/pci/graphic_drivers/profiles.toml b/profiles/pci/graphic_drivers/profiles.toml
index 86b8a4a..5bf3305 100644
--- a/profiles/pci/graphic_drivers/profiles.toml
+++ b/profiles/pci/graphic_drivers/profiles.toml
@@ -36,8 +36,11 @@ conditional_packages = """
 """
 post_install = """
     cat <<EOF >/etc/mkinitcpio.conf.d/10-chwd.conf
-# This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
-MODULES+=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)
+if [[ "$(declare -p MODULES)" =~ "declare -a" ]]; then
+    MODULES+=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)
+else
+    MODULES=($MODULES nvidia nvidia_modeset nvidia_uvm nvidia_drm)
+fi
 EOF
     mkinitcpio -P
 """
@@ -74,7 +77,11 @@ conditional_packages = """
 post_install = """
     cat <<EOF >/etc/mkinitcpio.conf.d/10-chwd.conf
 # This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
-MODULES+=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)
+if [[ "$(declare -p MODULES)" =~ "declare -a" ]]; then
+    MODULES+=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)
+else
+    MODULES=($MODULES nvidia nvidia_modeset nvidia_uvm nvidia_drm)
+fi
 EOF
     mkinitcpio -P
 """
@@ -155,7 +162,11 @@ post_install = """
         else
             cat <<EOF >/etc/mkinitcpio.conf.d/10-chwd.conf
 # This file is automatically generated by chwd. PLEASE DO NOT EDIT IT.
-MODULES+=(virtio virtio_blk virtio_pci virtio_net)
+if [[ "$(declare -p MODULES)" =~ "declare -a" ]]; then
+    MODULES+=(virtio virtio_blk virtio_pci virtio_net)
+else
+    MODULES=($MODULES virtio virtio_blk virtio_pci virtio_net)
+fi
 EOF
             mkinitcpio -P
         fi