diff --git a/SharedVariable.cs b/SharedVariable.cs
index a57b434e..6fd15bca 100644
--- a/SharedVariable.cs
+++ b/SharedVariable.cs
@@ -53,7 +53,7 @@ namespace VRCX
                 m_MapLock.ExitReadLock();
             }
 
-            return string.Empty;
+            return null;
         }
 
         public void Set(string key, string value)
diff --git a/html/src/repository/shared.js b/html/src/repository/shared.js
index a3dc0e6a..0b51fd89 100644
--- a/html/src/repository/shared.js
+++ b/html/src/repository/shared.js
@@ -5,10 +5,11 @@ class SharedRepository {
         key = transformKey(key);
         return SharedVariable.Remove(key);
     }
+
     getString(key, defaultValue = null) {
         key = transformKey(key);
         var value = SharedVariable.Get(key);
-        if (value === undefined) {
+        if (value === null) {
             return defaultValue;
         }
         return value;