diff --git a/.github/workflows/build-debian12-dev.yml b/.github/workflows/build-debian12-dev.yml
index dfb87c1..59c1c2f 100644
--- a/.github/workflows/build-debian12-dev.yml
+++ b/.github/workflows/build-debian12-dev.yml
@@ -109,7 +109,7 @@ jobs:
           sed -e "s/\${VERSION}/$VERSION-dev/" -e "s/\${DATI}/$DATI/" -e "s/\${NODE}/${{ vars.EXPERIMENTAL_NODE_VERSION }}/" ./debian12/Dockerfile > ./debian12/Dockerfile.tmp 
           mv -f ./debian12/Dockerfile.tmp ./debian12/Dockerfile
           # Remove separate npm install as fix for Node 20 
-          sed "/&& apt-get update && apt-get install -q -y --no-install-recommends npm \/d" ./debian12/Dockerfile > ./debian12/Dockerfile.tmp 
+          sed "/&& apt-get update && apt-get install -q -y --no-install-recommends npm/d" ./debian12/Dockerfile > ./debian12/Dockerfile.tmp 
           mv -f ./debian12/Dockerfile.tmp ./debian12/Dockerfile
 
       - name: Set up QEMU