diff --git a/tests/modules/gatk4/markduplicatesspark/test.yml b/tests/modules/gatk4/markduplicatesspark/test.yml
index 9c235d7a..24ff6d84 100644
--- a/tests/modules/gatk4/markduplicatesspark/test.yml
+++ b/tests/modules/gatk4/markduplicatesspark/test.yml
@@ -25,4 +25,4 @@
     - path: output/gatk4/test.bam
       md5sum: 898cb0a6616897d8ada90bab53bf0837
     - path: output/gatk4/test.metrics
-      contains: "[ ## METRICS CLASS	org.broadinstitute.hellbender.utils.read.markduplicates.GATKDuplicationMetrics ]"
+      contains: "[ "## METRICS CLASS", "org.broadinstitute.hellbender.utils.read.markduplicates.GATKDuplicationMetrics" ]"