diff --git a/plugins/aws/aws.plugin.zsh b/plugins/aws/aws.plugin.zsh
index ecf78b2c2..7994963c3 100644
--- a/plugins/aws/aws.plugin.zsh
+++ b/plugins/aws/aws.plugin.zsh
@@ -64,6 +64,7 @@ fi
 
 # AWS CLI v2 comes with its own autocompletion. Check if that is there, otherwise fall back
 if command -v aws_completer &> /dev/null; then
+  autoload -Uz bashcompinit && bashcompinit
   complete -C aws_completer aws
 else
   function _awscli-homebrew-installed() {
diff --git a/plugins/compleat/compleat.plugin.zsh b/plugins/compleat/compleat.plugin.zsh
index 247240c20..38f1b396a 100644
--- a/plugins/compleat/compleat.plugin.zsh
+++ b/plugins/compleat/compleat.plugin.zsh
@@ -10,8 +10,11 @@ if (( ${+commands[compleat]} )); then
   local setup="${prefix}/share/compleat-1.0/compleat_setup" 
 
   if [[ -f "$setup" ]]; then
+    if ! bashcompinit >/dev/null 2>&1; then
+      autoload -U bashcompinit
+      bashcompinit -i
+    fi
+
     source "$setup" 
   fi
-
-  unset prefix setup
 fi
diff --git a/plugins/drush/drush.plugin.zsh b/plugins/drush/drush.plugin.zsh
index 178750c24..8a20d79f2 100644
--- a/plugins/drush/drush.plugin.zsh
+++ b/plugins/drush/drush.plugin.zsh
@@ -99,4 +99,6 @@ alias drvg="drush variable-get"
 alias drvs="drush variable-set"
 
 # Enable drush autocomplete support
+autoload bashcompinit
+bashcompinit
 source $(dirname $0)/drush.complete.sh
diff --git a/plugins/stack/stack.plugin.zsh b/plugins/stack/stack.plugin.zsh
index e3b6503a5..45ef38761 100644
--- a/plugins/stack/stack.plugin.zsh
+++ b/plugins/stack/stack.plugin.zsh
@@ -1,3 +1,4 @@
 (( $+commands[stack] )) || return
 
+autoload -U +X bashcompinit && bashcompinit
 source <(stack --bash-completion-script stack)
diff --git a/plugins/wp-cli/wp-cli.plugin.zsh b/plugins/wp-cli/wp-cli.plugin.zsh
index 05ecc4b8a..97bed406e 100644
--- a/plugins/wp-cli/wp-cli.plugin.zsh
+++ b/plugins/wp-cli/wp-cli.plugin.zsh
@@ -138,6 +138,7 @@ alias wpwm='wp widget move'
 alias wpwu='wp widget update'
 
 
+autoload -U +X bashcompinit && bashcompinit
 # bash completion for the `wp` command
 
 _wp_complete() {