diff --git a/Jenkinsfile b/Jenkinsfile
index ec412985ad2..e496e32b275 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -36,6 +36,7 @@ pipeline {
 					-Djava.io.tmpdir=$WORKSPACE/tmp -Dproject.build.sourceEncoding=UTF-8 \
 					-Dtycho.surefire.argLine="--add-modules ALL-SYSTEM -Dcompliance=1.8,11,17,19,21 -Djdt.performance.asserts=disabled" \
 					-DDetectVMInstallationsJob.disabled=true \
+					-Dtycho.apitools.debug \
 					-Dcbi-ecj-version=99.99
 					"""
 			}