diff --git a/api/src/main/java/marquez/api/OpenLineageResource.java b/api/src/main/java/marquez/api/OpenLineageResource.java
index 7d5266cf13..259a500a53 100644
--- a/api/src/main/java/marquez/api/OpenLineageResource.java
+++ b/api/src/main/java/marquez/api/OpenLineageResource.java
@@ -136,6 +136,6 @@ static class Events {
     @JsonProperty("events")
     List<LineageEvent> value;
 
-    @NonNull int totalCount;
+    int totalCount;
   }
 }