diff --git a/.github/workflows/source/buildDoxygen b/.github/workflows/source/buildDoxygen
index 5c9e162e84..3ea4cfebd9 100755
--- a/.github/workflows/source/buildDoxygen
+++ b/.github/workflows/source/buildDoxygen
@@ -14,6 +14,6 @@ curl -L -o amrex-doxygen-web.tag.xml \
   https://amrex-codes.github.io/amrex/docs_xml/doxygen/amrex-doxygen-web.tag.xml
 
 # treat all warnings as errors
-#echo "WARN_AS_ERROR = YES" >> Doxyfile
+echo "WARN_AS_ERROR = YES" >> Doxyfile
 
 doxygen