diff --git a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessage.java b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessage.java
index 88b32d5a3c..6f5c0cf10b 100644
--- a/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessage.java
+++ b/google-cloud-bigquerystorage/src/main/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessage.java
@@ -154,9 +154,6 @@ private static DynamicMessage convertJsonToProtoMessageImpl(
           String.format(
               "JSONObject does not have the required field %s.%s.", jsonScope, missingFieldName));
     }
-    if (topLevel && msg.getSerializedSize() == 0) {
-      throw new IllegalArgumentException("The created protobuf message is empty.");
-    }
     return msg;
   }
 
diff --git a/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessageTest.java b/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessageTest.java
index 14c2d3763b..7b5c6bcfad 100644
--- a/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessageTest.java
+++ b/google-cloud-bigquerystorage/src/test/java/com/google/cloud/bigquery/storage/v1/JsonToProtoMessageTest.java
@@ -1035,13 +1035,9 @@ public void testEmptyProtoMessage() throws Exception {
     JSONObject json = new JSONObject();
     json.put("test_repeated", new JSONArray(new int[0]));
 
-    try {
-      DynamicMessage protoMsg =
-          JsonToProtoMessage.convertJsonToProtoMessage(RepeatedInt64.getDescriptor(), json);
-      Assert.fail("Should fail");
-    } catch (IllegalArgumentException e) {
-      assertEquals("The created protobuf message is empty.", e.getMessage());
-    }
+    DynamicMessage protoMsg =
+        JsonToProtoMessage.convertJsonToProtoMessage(RepeatedInt64.getDescriptor(), json);
+    assertEquals(protoMsg.getAllFields().size(), 0);
   }
 
   @Test
@@ -1123,4 +1119,15 @@ public void testJsonNullValue() throws Exception {
         JsonToProtoMessage.convertJsonToProtoMessage(TestInt64.getDescriptor(), json);
     assertEquals(expectedProto, protoMsg);
   }
+
+  @Test
+  public void testJsonAllFieldsNullValue() throws Exception {
+    TestInt64 expectedProto = TestInt64.newBuilder().build();
+    JSONObject json = new JSONObject();
+    json.put("long", JSONObject.NULL);
+    json.put("int", JSONObject.NULL);
+    DynamicMessage protoMsg =
+        JsonToProtoMessage.convertJsonToProtoMessage(TestInt64.getDescriptor(), json);
+    assertEquals(expectedProto, protoMsg);
+  }
 }