diff --git a/src/components/SpanAnnotationList.tsx b/src/components/SpanAnnotationList.tsx
index 106dfcf..53567f4 100644
--- a/src/components/SpanAnnotationList.tsx
+++ b/src/components/SpanAnnotationList.tsx
@@ -85,9 +85,9 @@ export default function SpanAnnotationList({
                     >
                       {displayName}
                     </span>
-                    {(span.confidence || span.outcome) && (
+                    {(span.confidence != null || span.outcome) && (
                       <div className="mt-0.5 text-[10px] text-muted-foreground flex gap-2">
-                        {span.confidence && <span>C:{span.confidence}</span>}
+                        {span.confidence != null && <span>C:{span.confidence}</span>}
                         {span.outcome && <span>{span.outcome}</span>}
                       </div>
                     )}