diff --git a/engine/src/test/scala/cromwell/webservice/MetadataBuilderActorSpec.scala b/engine/src/test/scala/cromwell/webservice/MetadataBuilderActorSpec.scala
index 343f72a697..b4e6973ed1 100644
--- a/engine/src/test/scala/cromwell/webservice/MetadataBuilderActorSpec.scala
+++ b/engine/src/test/scala/cromwell/webservice/MetadataBuilderActorSpec.scala
@@ -249,7 +249,7 @@ class MetadataBuilderActorSpec
       ),
       MetadataEvent(
         MetadataKey(workflowId, Option(MetadataJobKey("callA", None, 1)), CallMetadataKeys.VmCostPerHour),
-        MetadataValue(-1) // indicates an error when computing vmCostPerHour
+        MetadataValue(BigDecimal(-1)) // indicates an error when computing vmCostPerHour
       ),
       MetadataEvent(MetadataKey(workflowId, Option(MetadataJobKey("callB", None, 1)), CallMetadataKeys.VmStartTime),
                     MetadataValue("2023-10-30T11:01:00Z")
@@ -258,7 +258,7 @@ class MetadataBuilderActorSpec
                     MetadataValue("2023-10-30T12:31:00Z")
       ),
       MetadataEvent(MetadataKey(workflowId, Option(MetadataJobKey("callB", None, 1)), CallMetadataKeys.VmCostPerHour),
-                    MetadataValue(0.5)
+                    MetadataValue(BigDecimal(0.5))
       )
     )
     val query = MetadataQuery(workflowId, None, None, None, None, expandSubWorkflows = false)