diff --git a/includes/oik-loader-map.php b/includes/oik-loader-map.php
index f61135d..202e9b5 100644
--- a/includes/oik-loader-map.php
+++ b/includes/oik-loader-map.php
@@ -6,18 +6,23 @@
 
 /**
  * Create the oik-loader map file for oik-loader-MU
- * in the mu-plugins folder
- *
- * It can either be a PHP file or a CSV or something
- *
+ * in the mu-plugins folder.
  *
  * Syntax: oikwp oik-loader.php url=blocks.wp-a2z.org
  *
  *
  */
 
-function oik_loader_csv_file() {
-	return WPMU_PLUGIN_DIR . '/oik-loader.csv';
+if ( !function_exists( "oik_loader_csv_file") ) {
+
+	function oik_loader_csv_file() {
+		$csv_file = WPMU_PLUGIN_DIR;
+		$csv_file .= '/oik-loader.';
+		global $blog_id;
+		$csv_file .= $blog_id;
+		$csv_file .= '.csv';
+		return $csv_file;
+	}
 }
 function oik_loader_map() {
 	$csv = oik_loader_csv_file();
diff --git a/includes/oik-loader-mu.php b/includes/oik-loader-mu.php
index 25ee052..ebdff5c 100644
--- a/includes/oik-loader-mu.php
+++ b/includes/oik-loader-mu.php
@@ -39,11 +39,11 @@
 }
 
 /**
- * Builds the lookup index from oik-loader.csv
+ * Builds the lookup index from oik-loader.blog_id.csv
  * @return array|null
  */
 function oik_loader_mu_build_index() {
-	$oik_loader_csv = dirname( __FILE__  ) . "/oik-loader.csv";
+	$oik_loader_csv = oik_loader_csv_file();
 	$index = null;
 	if ( file_exists( $oik_loader_csv) ) {
 		//echo "File exists";
@@ -55,6 +55,19 @@ function oik_loader_mu_build_index() {
 	return $index;
 }
 
+	//$oik_loader_csv = dirname( __FILE__  ) . "/oik-loader." . $blog_id . ".csv";
+
+
+function oik_loader_csv_file() {
+	global $blog_id;
+	$csv_file = WPMU_PLUGIN_DIR ;
+	$csv_file .= '/oik-loader.';
+
+	$csv_file .= $blog_id;
+	$csv_file .= '.csv';
+	return $csv_file;
+}
+
 /**
  * Builds the lookup index for access by URI or post ID
  *