diff --git a/core/Constants.php b/core/Constants.php
index d54993c31..574773fc9 100644
--- a/core/Constants.php
+++ b/core/Constants.php
@@ -50,13 +50,11 @@ foreach ($dirsToCheck as $dir) {
 	//check this dir and every parent dir (until we hit the base of the drive)
 	// or until we hit a dir we can't read
 	while(true) {
-		//add the trailing slash we need to concatenate properly
-		$dir .= DIRECTORY_SEPARATOR;
 		//if it's readable, go ahead
 		if (@is_readable($dir)) {
 			//if the file exists, then we include it, set relevant vars and break out
-			if (file_exists($dir . $envFile)) {
-				define('SS_ENVIRONMENT_FILE', $dir . $envFile);
+			if (file_exists($dir . DIRECTORY_SEPARATOR . $envFile)) {
+				define('SS_ENVIRONMENT_FILE', $dir . DIRECTORY_SEPARATOR . $envFile);
 				include_once(SS_ENVIRONMENT_FILE);
 				//break out of BOTH loops because we found the $envFile
 				break(2);