diff --git a/.github/workflows/build_cmake.yml b/.github/workflows/build_cmake.yml
index 17fda68146..0d70062dd1 100644
--- a/.github/workflows/build_cmake.yml
+++ b/.github/workflows/build_cmake.yml
@@ -248,7 +248,7 @@ jobs:
       working-directory: ${{ runner.workspace }}/build/avogadroapp
 
     - name: AppImage
-      if: matrix.config.os == 'ubuntu-18.04'
+      if: matrix.config.os == 'ubuntu-20.04' && matrix.config.build_type == 'Release'
       shell: bash
       run: |
         mkdir appdir