diff --git a/.github/actions/test-adoc/action.yml b/.github/actions/test-adoc/action.yml
index 0b6ceabb5..c477a0285 100644
--- a/.github/actions/test-adoc/action.yml
+++ b/.github/actions/test-adoc/action.yml
@@ -19,7 +19,7 @@ runs:
           shell: ${{ env.shell }}
           run: |
             # Builds the adoc file using asciidoctor, discarding the output
-            # This outputs any warnings etc to the console
+            # This logs any warnings etc
 
             # asciidoc doesn't handle "include::partial" (this is supported by Antora on top), so we ignore any of those errors
             # We can't use Antora directly because if built in isolation, none of the links between documentation repos resolve
@@ -41,7 +41,8 @@ runs:
             if [[ ${result} != 0 ]]; then
               exit ${result}
             elif [[ ${output} ]]; then
-              echo "Failed with output:"
-              echo "${output}"
+              while IFS= read -r line; do
+                echo "::error::${line}"
+              done <<< "${output}"
               exit 1
             fi