diff --git a/src/logging/LogFilter.ts b/src/logging/LogFilter.ts
index 476bca0e..4da7d457 100644
--- a/src/logging/LogFilter.ts
+++ b/src/logging/LogFilter.ts
@@ -30,7 +30,7 @@ export enum LogLevel {
 export type LogLevelOrNull = LogLevel | null;
 
 export class LogFilter {
-    private _min: LogLevelOrNull = null;
+    private _min?: LogLevel;
     private _parentFilter?: LogFilter;
 
     constructor(parentFilter?: LogFilter) {
@@ -44,7 +44,7 @@ export class LogFilter {
             }
         }
         // neither our children or us have a loglevel high enough, filter out.
-        if (this._min !== null && !Array.isArray(children) && item.logLevel < this._min) {
+        if (this._min && !Array.isArray(children) && item.logLevel < this._min) {
             return false;
         } else {
             return true;