diff --git a/CHANGELOG.md b/CHANGELOG.md
index cf1a71743..11082e872 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
     * Fixed `validation: strict` not working in blueprints [#1273](https://github.com/getgrav/grav/issues/1273)
     * Fixed `Data::filter()` removing empty fields (such as empty list) by default [#2805](https://github.com/getgrav/grav/issues/2805)
     * Fixed fatal error with non-integer page param value [#2803](https://github.com/getgrav/grav/issues/2803)
+    * Fixed `Assets::addInlineJs()` parameter type mismatch between v1.5 and v1.6 [#2659](https://github.com/getgrav/grav/issues/2659)
 
 # v1.6.19
 ## 12/04/2019
diff --git a/system/src/Grav/Common/Assets/Traits/LegacyAssetsTrait.php b/system/src/Grav/Common/Assets/Traits/LegacyAssetsTrait.php
index 229c2abae..7f91c6daf 100644
--- a/system/src/Grav/Common/Assets/Traits/LegacyAssetsTrait.php
+++ b/system/src/Grav/Common/Assets/Traits/LegacyAssetsTrait.php
@@ -51,7 +51,11 @@ trait LegacyAssetsTrait
                 // special case to handle old attributes being passed in
                 if (isset($arguments['attributes'])) {
                     $old_attributes = $arguments['attributes'];
-                    $arguments = array_merge($arguments, $old_attributes);
+                    if (is_array($old_attributes)) {
+                        $arguments = array_merge($arguments, $old_attributes);
+                    } else {
+                        $arguments['type'] = $old_attributes;
+                    }
                 }
                 unset($arguments['attributes']);