diff --git a/clean_files.txt b/clean_files.txt
index e1fed981..ad3d4975 100644
--- a/clean_files.txt
+++ b/clean_files.txt
@@ -102,6 +102,7 @@ plugins/available/java.plugin.bash
 plugins/available/jekyll.plugin.bash
 plugins/available/jump.plugin.bash
 plugins/available/less-pretty-cat.plugin.bash
+plugins/available/man.plugin.bash
 plugins/available/node.plugin.bash
 plugins/available/nodenv.plugin.bash
 plugins/available/osx-timemachine.plugin.bash
diff --git a/plugins/available/man.plugin.bash b/plugins/available/man.plugin.bash
index 473f04fd..b981565f 100644
--- a/plugins/available/man.plugin.bash
+++ b/plugins/available/man.plugin.bash
@@ -1,10 +1,14 @@
-cite about-plugin
+# shellcheck shell=bash
 about-plugin 'colorize man pages for better readability'
 
-export LESS_TERMCAP_mb=$'\e[1;32m'
-export LESS_TERMCAP_md=$'\e[1;32m'
-export LESS_TERMCAP_me=$'\e[0m'
-export LESS_TERMCAP_se=$'\e[0m'
-export LESS_TERMCAP_so=$'\e[01;33m'
-export LESS_TERMCAP_ue=$'\e[0m'
-export LESS_TERMCAP_us=$'\e[1;4;31m'
+: "${LESS_TERMCAP_mb:=$'\e[1;32m'}"
+: "${LESS_TERMCAP_md:=$'\e[1;32m'}"
+: "${LESS_TERMCAP_me:=$'\e[0m'}"
+: "${LESS_TERMCAP_se:=$'\e[0m'}"
+: "${LESS_TERMCAP_so:=$'\e[01;33m'}"
+: "${LESS_TERMCAP_ue:=$'\e[0m'}"
+: "${LESS_TERMCAP_us:=$'\e[1;4;31m'}"
+
+: "${LESS:=}"
+export "${!LESS_TERMCAP@}"
+export LESS="R${LESS#-}"