diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ArchiveController.java b/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ArchiveController.java
index c692557e1..c17447006 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ArchiveController.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ArchiveController.java
@@ -311,9 +311,8 @@ public class ArchiveController {
       @Schema(description = "The name of the most recent message backup on the cdn. The backup is at /backupDir/backupName")
       String backupName,
 
-      @Nullable
       @Schema(description = "The amount of space used to store media")
-      Long usedSpace) {}
+      long usedSpace) {}
 
   @GET
   @Produces(MediaType.APPLICATION_JSON)
@@ -345,7 +344,7 @@ public class ArchiveController {
             backupInfo.backupSubdir(),
             backupInfo.mediaSubdir(),
             backupInfo.messageBackupKey(),
-            backupInfo.mediaUsedSpace().orElse(null)));
+            backupInfo.mediaUsedSpace().orElse(0L)));
   }
 
   public record SetPublicKeyRequest(
diff --git a/service/src/test/java/org/whispersystems/textsecuregcm/controllers/ArchiveControllerTest.java b/service/src/test/java/org/whispersystems/textsecuregcm/controllers/ArchiveControllerTest.java
index 1a3f0c792..e89ef08fe 100644
--- a/service/src/test/java/org/whispersystems/textsecuregcm/controllers/ArchiveControllerTest.java
+++ b/service/src/test/java/org/whispersystems/textsecuregcm/controllers/ArchiveControllerTest.java
@@ -337,7 +337,7 @@ public class ArchiveControllerTest {
     assertThat(response.backupDir()).isEqualTo("myBackupDir");
     assertThat(response.backupName()).isEqualTo("filename");
     assertThat(response.cdn()).isEqualTo(1);
-    assertThat(response.usedSpace()).isNull();
+    assertThat(response.usedSpace()).isEqualTo(0L);
   }
 
   @Test