diff --git a/x230/upgrade.sh b/x230/upgrade.sh
index 1cb7bf4..f32880d 100755
--- a/x230/upgrade.sh
+++ b/x230/upgrade.sh
@@ -1,9 +1,6 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-3.0+
 # Copyright (C) 2018, Martin Kepplinger <martink@posteo.de>
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-NC='\033[0m'
 
 set -e
 
diff --git a/x230/x230_before_first_install.sh b/x230/x230_before_first_install.sh
index dda7c8e..af36679 100755
--- a/x230/x230_before_first_install.sh
+++ b/x230/x230_before_first_install.sh
@@ -1,9 +1,6 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-3.0+
 # Copyright (C) 2018, Martin Kepplinger <martink@posteo.de>
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-NC='\033[0m'
 
 source functions.sh
 set -e
diff --git a/x230/x230_heads.sh b/x230/x230_heads.sh
index 89b7a63..75a1e21 100755
--- a/x230/x230_heads.sh
+++ b/x230/x230_heads.sh
@@ -1,10 +1,6 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-3.0+
 # Copyright (C) 2018, Martin Kepplinger <martink@posteo.de>
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-YELLOW='\033[0;33m'
-NC='\033[0m'
 
 set -e
 
diff --git a/x230/x230_skulls.sh b/x230/x230_skulls.sh
index f1598e5..8410285 100755
--- a/x230/x230_skulls.sh
+++ b/x230/x230_skulls.sh
@@ -1,10 +1,6 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-3.0+
 # Copyright (C) 2018, Martin Kepplinger <martink@posteo.de>
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-YELLOW='\033[0;33m'
-NC='\033[0m'
 
 set -e