diff --git a/Resources/Private/Fusion/Prototypes/Image.fusion b/Resources/Private/Fusion/Prototypes/Image.fusion
index 54edb8a..995516f 100644
--- a/Resources/Private/Fusion/Prototypes/Image.fusion
+++ b/Resources/Private/Fusion/Prototypes/Image.fusion
@@ -42,7 +42,7 @@ prototype(Sitegeist.Kaleidoscope:Image) < prototype(Neos.Fusion:Component) {
     imageSource = null
     srcset = null
     sizes = null
-    alt = null
+    alt = ''
     title = null
     class = null
 
diff --git a/Resources/Private/Fusion/Prototypes/Picture.fusion b/Resources/Private/Fusion/Prototypes/Picture.fusion
index d00fe2f..cf9ad12 100644
--- a/Resources/Private/Fusion/Prototypes/Picture.fusion
+++ b/Resources/Private/Fusion/Prototypes/Picture.fusion
@@ -33,7 +33,7 @@ prototype(Sitegeist.Kaleidoscope:Picture) < prototype(Neos.Fusion:Component) {
     srcset = null
     sizes = null
     sources = null
-    alt = null
+    alt = ''
     title = null
     class = null
     content = ''