diff --git a/provider/file_resource.go b/provider/file_resource.go
index afd01b5..0885c01 100644
--- a/provider/file_resource.go
+++ b/provider/file_resource.go
@@ -60,7 +60,7 @@ func (r *fileResource) Schema(ctx context.Context, req resource.SchemaRequest, r
 			},
 			"challenge_id": schema.StringAttribute{
 				MarkdownDescription: "Challenge of the file.",
-				Required:            true,
+				Optional:            true,
 			},
 			"name": schema.StringAttribute{
 				MarkdownDescription: "Name of the file as displayed to end-users.",
@@ -291,9 +291,5 @@ func lookForChallengeId(ctx context.Context, client *api.Client, fileID int, dia
 			}
 		}
 	}
-	diags.AddError(
-		"Provider Error",
-		fmt.Sprintf("Unable to find challenge of file %d", fileID),
-	)
 	return types.StringNull()
 }