diff --git a/src/ComposerPlugin.php b/src/ComposerPlugin.php
index 3acb623..1048abc 100644
--- a/src/ComposerPlugin.php
+++ b/src/ComposerPlugin.php
@@ -2,8 +2,10 @@
 
 namespace Cs278\ComposerAudit;
 
-if (\PHP_VERSION_ID >= 70100) {
-    require __DIR__.'/ComposerPlugin.real.php';
-} else {
-    require __DIR__.'/ComposerPlugin.fake.php';
+if (!class_exists(__NAMESPACE__.'\\ComposerPlugin', false)) {
+    if (\PHP_VERSION_ID >= 70100) {
+        require __DIR__.'/ComposerPlugin.real.php';
+    } else {
+        require __DIR__.'/ComposerPlugin.fake.php';
+    }
 }