diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index e4cf72a7d..ccd6f80c6 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -171,7 +171,7 @@ jobs:
           
           docker buildx build --cache-to "type=local,dest=/tmp/.buildx-cache" \
             --output "type=image,push=false" \
-            $BUILDX_ARGS
+            ${BUILDX_ARGS}
 
       - name: Docker Hub login
         if: success()
@@ -193,7 +193,7 @@ jobs:
           
           docker buildx build --cache-from "type=local,src=/tmp/.buildx-cache" \
             --output "type=image,push=false" \
-            $BUILDX_ARGS
+            ${BUILDX_ARGS}
 
       - name: Inspect images
         run: |