diff --git a/completion/available/system.completion.bash b/completion/available/system.completion.bash
index 113a93f5..aa9768ac 100644
--- a/completion/available/system.completion.bash
+++ b/completion/available/system.completion.bash
@@ -1,8 +1,11 @@
-#!/usr/bin/env bash
+# shellcheck shell=bash
 #
 # Loads the system's Bash completion modules.
 # If Homebrew is installed (OS X), it's Bash completion modules are loaded.
 
+# Load before other completions
+# BASH_IT_LOAD_PRIORITY: 325
+
 if shopt -qo nounset
 then # Bash-completion is too large and complex to expect to handle unbound variables throughout the whole codebase.
 	__bash_it_restore_nounset=true
diff --git a/test/install/install.bats b/test/install/install.bats
index 40f3162d..b8161896 100644
--- a/test/install/install.bats
+++ b/test/install/install.bats
@@ -32,7 +32,7 @@ function local_setup {
   assert_link_exist "$BASH_IT/enabled/250---base.plugin.bash"
   assert_link_exist "$BASH_IT/enabled/365---alias-completion.plugin.bash"
   assert_link_exist "$BASH_IT/enabled/350---bash-it.completion.bash"
-  assert_link_exist "$BASH_IT/enabled/350---system.completion.bash"
+  assert_link_exist "$BASH_IT/enabled/325---system.completion.bash"
 }
 
 @test "install: verify that a backup file is created" {