diff --git a/libraries/botbuilder-core/src/botState.ts b/libraries/botbuilder-core/src/botState.ts
index d69b3a1a93..15512b03dd 100644
--- a/libraries/botbuilder-core/src/botState.ts
+++ b/libraries/botbuilder-core/src/botState.ts
@@ -225,7 +225,7 @@ export class BotState implements PropertyManager {
                 return value.map((e) => inner([null, e], skip));
             }
 
-            if (typeof value !== 'object') {
+            if (value === null || typeof value !== 'object') {
                 return value;
             }