diff --git a/.github/workflows/CI-unixish.yml b/.github/workflows/CI-unixish.yml
index 1b7a01580..157f9193e 100644
--- a/.github/workflows/CI-unixish.yml
+++ b/.github/workflows/CI-unixish.yml
@@ -83,6 +83,12 @@ jobs:
           make -j$(nproc)
           ./test-projectfile
 
+      - name: Generate Qt help file on ubuntu
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          pushd gui/help
+          qhelpgenerator online-help.qhcp -o online-help.qhc
+
       # Run self check after "Build GUI" to include generated headers in analysis
       - name: Self check
         if: matrix.os == 'ubuntu-latest'