diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailResourceFragment.java b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailResourceFragment.java
index 88c98db..fbbdaed 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailResourceFragment.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailResourceFragment.java
@@ -103,6 +103,8 @@ public class ModDetailResourceFragment extends Fragment {
                 } else if(node.getContent() instanceof Resource.File) { // if leaf is file
                     KVV kvv = ModDetailResourceFragment.this.context.getKVV();
                     kvv.getModule(mItemPos, (Modules.Module module) -> {
+                        if (getContext() == null)
+                            return;
                         AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getContext());
                         Resource.File file = (Resource.File) node.getContent();
                         String folderName = "FU-"+module.title.replaceAll("[:*<>|/\"\\\\]", "-");
@@ -232,7 +234,7 @@ public class ModDetailResourceFragment extends Fragment {
                 }
             }, "ModDetailResourceFragment");
         } else
-            throw new RuntimeException(context.toString() + "must implement MainActivityListener");
+            throw new RuntimeException(context.toString() + " must implement MainActivityListener");
     }
 
     @Override