diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d146b0adf03..1f381da346b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -55,7 +55,7 @@ jobs:
           platforms: linux/amd64,linux/arm64/v8
           build-args: |
             ETHERPAD_PLUGINS='kitsteam/ep_comments_page kitsteam/ep_push2delete ep_image_upload ep_embedded_hyperlinks2 ep_headings2 ep_align ep_font_color ep_delete_empty_pads ep_delete_after_delay ep_helmet ep_font_size ep_disable_imports'
-            INSTALL_SOFFICE=1
+            INSTALL_SOFFICE='1'
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
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