diff --git a/main/src/com/google/refine/browsing/DecoratedValue.java b/main/src/com/google/refine/browsing/DecoratedValue.java
index 398d8cb34..90bde0930 100644
--- a/main/src/com/google/refine/browsing/DecoratedValue.java
+++ b/main/src/com/google/refine/browsing/DecoratedValue.java
@@ -33,12 +33,14 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package com.google.refine.browsing;
 
+import java.time.OffsetDateTime;
 import java.util.Properties;
 
 import org.json.JSONException;
 import org.json.JSONWriter;
 
 import com.google.refine.Jsonizable;
+import com.google.refine.util.StringUtils;
 
 /**
  * Store a value and its text label, in case the value is not a string itself.
@@ -52,8 +54,12 @@ public class DecoratedValue implements Jsonizable {
     final public String label;
     
     public DecoratedValue(Object value, String label) {
-        this.value = value;
-        this.label = label;
+      if (value instanceof OffsetDateTime) {
+          this.value = StringUtils.toString(value);
+      } else {
+          this.value = value;
+      }
+      this.label = label;
     }
     
     @Override