diff --git a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailFragment.java b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailFragment.java
index 25e6931..e6d3b6a 100644
--- a/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailFragment.java
+++ b/app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailFragment.java
@@ -61,7 +61,7 @@ public class ModDetailFragment extends Fragment implements ModDetailListener {
             mListener.onTitleTextChange(R.string.courses);
             mListener.getKVV().getModuleList(success -> {
                 Modules.Module module = success.get(mItemPos);
-                if (module != null)
+                if (mListener != null && module != null)
                     mListener.onTitleTextChange(module.title);
             }, log::e);
         }