diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JSONUtils.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JSONUtils.java
index b622d6e41..415f53885 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JSONUtils.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/utils/JSONUtils.java
@@ -13,7 +13,7 @@ public class JSONUtils {
     public static String insertSingleJSONValue(String value, Map<String, String> keyValueMap) {
         String valueInserted = value;
         for (Map.Entry<String, String> keyValue : keyValueMap.entrySet()) {
-            valueInserted = valueInserted.replace("${" + keyValue.getKey() + "}", keyValue.getValue());
+            valueInserted = valueInserted.replace("${" + keyValue.getKey() + "}", keyValue.getValue() == null ? "" : keyValue.getValue());
         }
         return valueInserted;
     }