diff --git a/app/src/main/java/net/kdt/pojavlaunch/Tools.java b/app/src/main/java/net/kdt/pojavlaunch/Tools.java
index 84d07d181..1e70b8c1f 100644
--- a/app/src/main/java/net/kdt/pojavlaunch/Tools.java
+++ b/app/src/main/java/net/kdt/pojavlaunch/Tools.java
@@ -79,7 +79,7 @@ public final class Tools
         List<String> overrideableArgList = new ArrayList<String>();
 
         overrideableArgList.add("-Djava.security.manager");
-        overrideableArgList.add("-Djava.security.policy=java_sandbox.policy");
+        overrideableArgList.add("-Djava.security.policy==java_sandbox.policy");
         
         overrideableArgList.add("-Djava.home=" + Tools.DIR_HOME_JRE);
         overrideableArgList.add("-Djava.io.tmpdir=" + ctx.getCacheDir().getAbsolutePath());