diff --git a/.github/workflows/build_viewer.yml b/.github/workflows/build_viewer.yml
index e4f1c94a07..e0a8567aa2 100644
--- a/.github/workflows/build_viewer.yml
+++ b/.github/workflows/build_viewer.yml
@@ -21,14 +21,7 @@ jobs:
       matrix:
         os: [macos-11,ubuntu-20.04,windows-2022]
         grid: [sl,os]
-        addrsize: [64,32]
-        exclude:
-          - os: ubuntu-20.04
-            addrsize: 32
-          - os: macos-11
-            addrsize: 32
-          # - grid: sl
-          #   addrsize: 32
+        addrsize: [64]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3