diff --git a/brut.j.util/src/main/java/brut/util/OSDetection.java b/brut.j.util/src/main/java/brut/util/OSDetection.java
index ec7921de..fcb31ef1 100644
--- a/brut.j.util/src/main/java/brut/util/OSDetection.java
+++ b/brut.j.util/src/main/java/brut/util/OSDetection.java
@@ -18,7 +18,7 @@ package brut.util;
 
 public class OSDetection {
     private static final String OS = System.getProperty("os.name").toLowerCase();
-    private static final String BIT = System.getProperty("sun.arch.data.model").toLowerCase();
+    private static final String BIT = System.getProperty("sun.arch.data.model");
 
     public static boolean isWindows() {
         return (OS.contains("win"));
@@ -48,7 +48,7 @@ public class OSDetection {
 
             return arch != null && arch.endsWith("64") || wow64Arch != null && wow64Arch.endsWith("64");
         }
-        return BIT.equalsIgnoreCase("64");
+        return BIT != null && BIT.equalsIgnoreCase("64");
     }
 
     public static String returnOS() {