diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ebee9fd..dceb7a7a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+### 3.8.11 ###
+- Fixed registerSchematicSources hook
+
 ### 3.8.10 ###
 - Added dummy getTheme method to schematic application
 
diff --git a/README.md b/README.md
index 9161684a..da64d820 100644
--- a/README.md
+++ b/README.md
@@ -194,7 +194,7 @@ public function registerMigrationService()
 Gives plugins a chance to register their own Migration Services to Schematic in order to import or exports their own data.
 
 ```php
-public function registerSchematicSource($indexFrom)
+public function registerSchematicSources($indexFrom)
 {
     $mapping = [
         'createSomething:handle1' => 'createSomething:1'
diff --git a/src/Services/Sources.php b/src/Services/Sources.php
index 3e387d99..3e68f978 100644
--- a/src/Services/Sources.php
+++ b/src/Services/Sources.php
@@ -154,7 +154,7 @@ private function getHookedSource($source, $indexFrom)
    private function loadHookedSources($indexFrom)
    {
        if (!isset($this->hookedSources[$indexFrom])) {
-           $this->hookedSources[$indexFrom] = Craft::app()->plugins->call('registerSchematicSources');
+           $this->hookedSources[$indexFrom] = Craft::app()->plugins->call('registerSchematicSources', [$indexFrom]);
        }
    }
 }