diff --git a/genesis-connect-for-woothemes-sensei.php b/genesis-connect-for-woothemes-sensei.php
index bcc3b30..fff1e77 100644
--- a/genesis-connect-for-woothemes-sensei.php
+++ b/genesis-connect-for-woothemes-sensei.php
@@ -88,6 +88,21 @@ function gcfws_admin_notice_message() {
 	}
 }
 
+/**
+ * Error message if you're not using Woothemes Sensei.
+ *
+ * @since 1.1
+ */
+function gcfws_admin_notice_message_sensei() {
+	$error = sprintf( _e( 'Sorry, you can\'t use the Genesis Connect for Woothemes Sensei Plugin unless the <a href="%s">Sensei Plugin</a> is active. The plugin has been deactivated.', 'gcfws' ), 'http://senseilms.com' );
+
+	echo '<div class="error"><p>' . $error . '</p></div>';
+
+	if ( isset( $_GET['activate'] ) ) {
+		unset( $_GET['activate'] );
+	}
+}
+
 /**
  * Load plugin textdomain.
  *