diff --git a/app/code/Magento/Backend/Model/Config/Backend/Image/Logo.php b/app/code/Magento/Backend/Model/Config/Backend/Image/Logo.php
index e937ed2f34688..aa717c2f407c7 100644
--- a/app/code/Magento/Backend/Model/Config/Backend/Image/Logo.php
+++ b/app/code/Magento/Backend/Model/Config/Backend/Image/Logo.php
@@ -37,4 +37,14 @@ protected function _addWhetherScopeInfo()
     {
         return true;
     }
+
+    /**
+     * Getter for allowed extensions of uploaded files.
+     *
+     * @return string[]
+     */
+    protected function _getAllowedExtensions()
+    {
+        return ['jpg', 'jpeg', 'gif', 'png', 'svg'];
+    }
 }
diff --git a/app/code/Magento/Theme/etc/adminhtml/system.xml b/app/code/Magento/Theme/etc/adminhtml/system.xml
index 7d700eb3d0aac..3fe1e5e07fdcc 100644
--- a/app/code/Magento/Theme/etc/adminhtml/system.xml
+++ b/app/code/Magento/Theme/etc/adminhtml/system.xml
@@ -61,7 +61,7 @@
                 <label>Header</label>
                 <field id="logo_src" translate="label" type="image" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                     <label>Logo Image</label>
-                    <comment>Allowed file types:PNG, GIF, JPG, JPEG.</comment>
+                    <comment>Allowed file types:PNG, GIF, JPG, JPEG, SVG.</comment>
                     <backend_model>Magento\Backend\Model\Config\Backend\Image\Logo</backend_model>
                     <base_url type="media" scope_info="1">logo</base_url>
                 </field>