diff --git a/pxtblocks/fields/field_imagedropdown.ts b/pxtblocks/fields/field_imagedropdown.ts
index 3aa293a0ca64..1ddf1be2ae5a 100644
--- a/pxtblocks/fields/field_imagedropdown.ts
+++ b/pxtblocks/fields/field_imagedropdown.ts
@@ -193,6 +193,7 @@ export class FieldImageDropdown extends FieldDropdownGrid implements FieldCustom
                 button.setAttribute('data-value', value);
                 buttonImg.setAttribute('data-value', value);
                 buttonImg.setAttribute('aria-hidden', 'true');
+                button.title = content.alt;
                 button.appendChild(buttonImg);
                 this.gridItems.push(button);
                 buttonContainer.appendChild(button);
diff --git a/pxtblocks/fields/field_images.ts b/pxtblocks/fields/field_images.ts
index 3d515f61cd80..fe0da97da636 100644
--- a/pxtblocks/fields/field_images.ts
+++ b/pxtblocks/fields/field_images.ts
@@ -110,6 +110,7 @@ export class FieldImages extends FieldImageDropdown implements FieldCustom {
             button.setAttribute('data-value', value);
             buttonImg.setAttribute('data-value', value);
             buttonImg.setAttribute('aria-hidden', 'true');
+            button.title = content.alt;
             button.appendChild(buttonImg);
             if (this.addLabel_) {
                 const buttonText = this.createTextNode_(content.alt);