diff --git a/frontend/src/test/scala/bloop/logging/RecordingLogger.scala b/frontend/src/test/scala/bloop/logging/RecordingLogger.scala
index 65107e3c28..2a6e92154b 100644
--- a/frontend/src/test/scala/bloop/logging/RecordingLogger.scala
+++ b/frontend/src/test/scala/bloop/logging/RecordingLogger.scala
@@ -9,7 +9,9 @@ class RecordingLogger extends AbstractLogger {
   def clear(): Unit = messages.clear()
   def getMessages(): List[(String, String)] = messages.iterator.asScala.toList.map {
     // Remove trailing '\r' so that we don't have to special case for Windows
-    case (category, msg) => (category, msg.stripSuffix("\r"))
+    case (category, msg0) =>
+      val msg = if (msg0 == null) "<null reference>" else msg0
+      (category, msg.stripSuffix("\r"))
   }
 
   override val name: String = "RecordingLogger"