diff --git a/test/src/comp-tests.el b/test/src/comp-tests.el
index f60e4ab049..3813728687 100644
--- a/test/src/comp-tests.el
+++ b/test/src/comp-tests.el
@@ -75,8 +75,9 @@ comp-tests-bootstrap
       (load comp1-eln nil nil t t)
       (should (subr-native-elisp-p (symbol-function 'native-compile)))
       (message "Compiling stage2...")
-      (let ((t0 (current-time))
-            (comp2-eln (native-compile comp2-src)))
+      (let* ((comp-libgccjit-reproducer t)
+             (t0 (current-time))
+             (comp2-eln (native-compile comp2-src)))
         (message "Done in %d secs" (float-time (time-since t0)))
         (message "Comparing %s %s" comp1-eln comp2-eln)
         (should (= (call-process "cmp" nil nil nil comp1-eln comp2-eln) 0))))))