diff --git a/testing/btest/signatures/bad-eval-condition.zeek b/testing/btest/signatures/bad-eval-condition.zeek
index d64cb4cba4..19a048e94a 100644
--- a/testing/btest/signatures/bad-eval-condition.zeek
+++ b/testing/btest/signatures/bad-eval-condition.zeek
@@ -1,5 +1,5 @@
 # @TEST-EXEC-FAIL: zeek -r $TRACES/ftp/ipv4.trace %INPUT
-# @TEST-EXEC: btest-diff .stderr
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath  btest-diff .stderr
 
 @load-sigs blah.sig