diff --git a/api/src/org/labkey/api/qc/TsvDataExchangeHandler.java b/api/src/org/labkey/api/qc/TsvDataExchangeHandler.java
index 6bfa0ed178f..43a18c6bd11 100644
--- a/api/src/org/labkey/api/qc/TsvDataExchangeHandler.java
+++ b/api/src/org/labkey/api/qc/TsvDataExchangeHandler.java
@@ -454,7 +454,7 @@ protected void writeRunProperties(
         {
             pw.append(writer.quoteValue(entry.getKey().getName()));
             pw.append('\t');
-            pw.append(writer.quoteValue(Objects.toString(entry.getValue())));
+            pw.append(writer.quoteValue(Objects.toString(entry.getValue(), "")));
             pw.append('\t');
             pw.println(writer.quoteValue(entry.getKey().getPropertyDescriptor().getPropertyType().getJavaType().getName()));
         }