diff --git a/launcher/src/main/java/com/skcraft/launcher/model/minecraft/Library.java b/launcher/src/main/java/com/skcraft/launcher/model/minecraft/Library.java
index 3f01df4..a9d9e28 100644
--- a/launcher/src/main/java/com/skcraft/launcher/model/minecraft/Library.java
+++ b/launcher/src/main/java/com/skcraft/launcher/model/minecraft/Library.java
@@ -67,10 +67,12 @@
                     return null;
             }
 
-            return nativeString.replace("${arch}", environment.getArchBits());
-        } else {
-            return null;
+            if (nativeString != null) {
+                return nativeString.replace("${arch}", environment.getArchBits());
+            }
         }
+
+        return null;
     }
 
     public void ensureDownloadsExist() {