diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 648f3771..3e75ed76 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
         target: [webgl, android]
     container:
       image: node:10.16-jessie
-      options: --build-arg IMAGE_TARGET_ARG=a_value
+      options: IMAGE_TARGET_ARG=a_value
     steps:
       # Checkout repository (required to test local actions)
       - name: Checkout repository