diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 4785273b78..b26006f2ff 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -179,7 +179,7 @@ jobs:
 
           # determine the viewer channel from the branch name
           branch=$AUTOBUILD_VCS_BRANCH
-          IFS='/' read -ra ba <<< $branch
+          IFS='/' read -ra ba <<< "$branch"
           prefix=${ba[0]}
           if [ "$prefix" == "project" ]; then
               IFS='_' read -ra prj <<< "${ba[1]}"