diff --git a/examples/05-MUSUN/CMakeLists.txt b/examples/05-MUSUN/CMakeLists.txt
index 48eef28..519909b 100644
--- a/examples/05-MUSUN/CMakeLists.txt
+++ b/examples/05-MUSUN/CMakeLists.txt
@@ -10,3 +10,14 @@ endif()
 
 add_executable(05-MUSUN main.cc HPGeTestStand.hh HPGeTestStand.cc)
 target_link_libraries(05-MUSUN PUBLIC RMG::remage)
+
+# collect auxiliary files
+file(
+  GLOB _aux
+  RELATIVE ${PROJECT_SOURCE_DIR}
+  *.csv *.mac)
+
+# copy them to the build area
+foreach(_file ${_aux})
+  configure_file(${PROJECT_SOURCE_DIR}/${_file} ${PROJECT_BINARY_DIR}/${_file} COPYONLY)
+endforeach()
diff --git a/examples/05-MUSUN/main.cc b/examples/05-MUSUN/main.cc
index 7632fda..95324cc 100644
--- a/examples/05-MUSUN/main.cc
+++ b/examples/05-MUSUN/main.cc
@@ -11,6 +11,7 @@ int main(int argc, char** argv) {
   manager.SetUserInit(new HPGeTestStand());
   manager.SetNumberOfThreads(2);
   manager.EnablePersistency();
+  manager.SetOutputOverwriteFiles(true);
   manager.GetDetectorConstruction()->RegisterDetector(kGermanium, "HPGe1", 0);
   manager.GetDetectorConstruction()->RegisterDetector(kGermanium, "HPGe2", 1);
   manager.GetDetectorConstruction()->RegisterDetector(kGermanium, "HPGe3", 2);
@@ -22,5 +23,6 @@ int main(int argc, char** argv) {
   manager.Initialize();
   manager.Run();
 
-  return 0;
+  if (manager.HadError()) return 1;
+  return manager.HadWarning() ? 2 : 0;
 }
diff --git a/examples/05-MUSUN/run.mac b/examples/05-MUSUN/run.mac
index a59b48a..198951b 100644
--- a/examples/05-MUSUN/run.mac
+++ b/examples/05-MUSUN/run.mac
@@ -6,11 +6,9 @@
 
 /RMG/Output/FileName output.root
 
-
-
 /RMG/Generator/Confine UnConfined
 /RMG/Generator/Select MUSUNCosmicMuons
 
-/RMG/Generator/MUSUNCosmicMuons/SetMUSUNFile MUSUN_10k_events.csv
+/RMG/Generator/MUSUNCosmicMuons/SetMUSUNFile MUSUN_100_events.csv
 
-/run/beamOn 1000
+/run/beamOn 100
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 67bfe4c..86a41a7 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -15,3 +15,7 @@ add_subdirectory(internals)
 add_subdirectory(output)
 add_subdirectory(python)
 add_subdirectory(vertex)
+
+if(RMG_BUILD_EXAMPLES)
+  add_subdirectory(examples)
+endif()
diff --git a/tests/examples/CMakeLists.txt b/tests/examples/CMakeLists.txt
new file mode 100644
index 0000000..1ec935d
--- /dev/null
+++ b/tests/examples/CMakeLists.txt
@@ -0,0 +1,5 @@
+add_test(
+  NAME examples/05-MUSUN
+  WORKING_DIRECTORY $<TARGET_FILE_DIR:05-MUSUN>
+  COMMAND 05-MUSUN run.mac)
+set_tests_properties(examples/05-MUSUN PROPERTIES LABELS extra)