diff --git a/plugins/available/nvm.plugin.bash b/plugins/available/nvm.plugin.bash
index 87dce644..0e6da5d8 100644
--- a/plugins/available/nvm.plugin.bash
+++ b/plugins/available/nvm.plugin.bash
@@ -1,22 +1,23 @@
-# Bash-it no longer bundles nvm, as this was quickly becoming outdated.
+# shellcheck shell=bash
 #
 # BASH_IT_LOAD_PRIORITY: 225
 #
+# Bash-it no longer bundles nvm, as this was quickly becoming outdated.
 # Please install nvm from https://github.com/creationix/nvm.git if you want to use it.
 
 cite about-plugin
 about-plugin 'node version manager configuration'
 
-export NVM_DIR=${NVM_DIR:-$HOME/.nvm}
+export NVM_DIR="${NVM_DIR:-$HOME/.nvm}"
 # This loads nvm
-if _bash_it_homebrew_check && [ -s "${BASH_IT_HOMEBREW_PREFIX}/nvm.sh" ]
+if _bash_it_homebrew_check && [[ -s "${BASH_IT_HOMEBREW_PREFIX}/nvm.sh" ]]
 then
-  . "${BASH_IT_HOMEBREW_PREFIX}/nvm.sh"
+  source "${BASH_IT_HOMEBREW_PREFIX}/nvm.sh"
 else
-  [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"
+  [[ -s "$NVM_DIR/nvm.sh" ]] && source "$NVM_DIR/nvm.sh"
 fi
 
-if ! command -v nvm &>/dev/null
+if ! _command_exists nvm
 then
   function nvm() {
     echo "Bash-it no longer bundles the nvm script. Please install the latest version from"