diff --git a/install.php b/install.php
index e4cbe703..ac9737bd 100644
--- a/install.php
+++ b/install.php
@@ -201,7 +201,7 @@ function build_dirs() { // {{{
 	}
 } // }}}
 function write_config($dsn) { // {{{
-	$file_content .= "<?php \$database_dsn='$dsn'; ?>";
+	$file_content = "<?php \$database_dsn='$dsn'; ?>";
 	
 	if(is_writable("./") && installer_write_file("config.php", $file_content)) {
 		assert(file_exists("config.php"));