diff --git a/tomcat.spec b/tomcat.spec
index 7b86632..345968e 100644
--- a/tomcat.spec
+++ b/tomcat.spec
@@ -77,6 +77,7 @@ Patch2:         %{name}-%{major_version}.%{minor_version}-sle.catalina.policy.pa
 Patch3:         %{name}-%{major_version}.%{minor_version}-javadoc.patch
 # PATCH-FIX-OPENSUSE: include all necessary aqute-bnd jars
 Patch4:         tomcat-9.0-osgi-build.patch
+# PATCH-FIX-OPENSUSE: our ecj does not have CompilerOptions.VERSION_16
 Patch5:         %{name}-%{major_version}.%{minor_version}-jdt.patch
 # PATCH-FIX-OPENSUSE: set ajp connector secreteRequired to false by default to avoid tomcat not starting
 Patch6:         tomcat-9.0.75-secretRequired-default.patch