diff --git a/src/flags.ts b/src/flags.ts
index 122bc50b577..9ca21cff9f5 100644
--- a/src/flags.ts
+++ b/src/flags.ts
@@ -4,6 +4,6 @@ export const watchFlag = (description?: string) => {
   return Flags.boolean({
     default: false,
     char: 'w',
-    description: description || 'Enable watch mode',
+    description: description ?? 'Enable watch mode',
   });
 };
diff --git a/src/globals.ts b/src/globals.ts
index b0d5d6113df..47c5acd910f 100644
--- a/src/globals.ts
+++ b/src/globals.ts
@@ -27,7 +27,7 @@ export type SpecWatcherParams = {
 
 export const specWatcher = (params: SpecWatcherParams) => {
   if (!params.spec.getFilePath()) { return WATCH_MESSAGES.logOnAutoDisable(params.docVersion); }
-  if (CHOKIDAR_INSTANCE_STORE.get(params.label || '_default')) { return; }
+  if (CHOKIDAR_INSTANCE_STORE.get(params.label ?? '_default')) { return; }
 
   const filePath = params.spec.getFilePath() as string;
   try {
diff --git a/src/models/SpecificationFile.ts b/src/models/SpecificationFile.ts
index 4d4fe917bf0..e1c55899266 100644
--- a/src/models/SpecificationFile.ts
+++ b/src/models/SpecificationFile.ts
@@ -64,7 +64,7 @@ export class Specification {
   }
 
   getSource() {
-    return this.getFilePath() || this.getFileURL();
+    return this.getFilePath() ?? this.getFileURL();
   }
 
   toSourceString() {