diff --git a/src/ApplicationModule.cc b/src/ApplicationModule.cc
index dc0cd804907209eaf0a622dea6aaf5ae210a93dc..05d6326bb50fb467deba1947036f8aa329853898 100644
--- a/src/ApplicationModule.cc
+++ b/src/ApplicationModule.cc
@@ -14,6 +14,7 @@
 namespace ChimeraTK {
 
   ApplicationModule::ApplicationModule() {
+    assert(&(Application::getInstance()) != nullptr);
     Application::getInstance().registerModule(*this);
   }