diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31fa7969b..343479247 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
     * Implemented `Composer\CaBundle` for SSL Certs [#1241](https://github.com/getgrav/grav/issues/1241)
     * Refactored the Assets sorting logic
 1. [](#bugfix)
+    * Fixed issue with Image query string not being fully URL encoded [#1622](https://github.com/getgrav/grav/issues/1622)
     * Fixed `Page::summary()` when using delimiter and multibyte UTF8 Characters [#1644](https://github.com/getgrav/grav/issues/1644)
 
 # v1.3.3
diff --git a/system/src/Grav/Common/Page/Medium/Medium.php b/system/src/Grav/Common/Page/Medium/Medium.php
index e817375b9..cf8faf55d 100644
--- a/system/src/Grav/Common/Page/Medium/Medium.php
+++ b/system/src/Grav/Common/Page/Medium/Medium.php
@@ -490,7 +490,7 @@ class Medium extends Data implements RenderableInterface
     {
         $qs = $method;
         if (count($args) > 1 || (count($args) == 1 && !empty($args[0]))) {
-            $qs .= '=' . implode(',', array_map(function ($a) { return urlencode($a); }, $args));
+            $qs .= '=' . implode(',', array_map(function ($a) { return rawurlencode($a); }, $args));
         }
 
         if (!empty($qs)) {