diff --git a/unittests/test_5.c b/unittests/test_5.c
new file mode 100644
index 0000000..cb75d07
--- /dev/null
+++ b/unittests/test_5.c
@@ -0,0 +1,8 @@
+#include "tests.h"
+
+void test_5()
+{
+    printf("TEST 5 STARTET\n");
+    assert(!printEndMsg(1000, 2000));
+    printf("TEST 5 ERFOLGREICH\n");
+}
\ No newline at end of file
diff --git a/unittests/test_main.c b/unittests/test_main.c
index 33ef33b..bc9cb02 100644
--- a/unittests/test_main.c
+++ b/unittests/test_main.c
@@ -8,4 +8,5 @@ int main()
     test_2();
     test_3();
     test_4();
+    test_5();
 }
\ No newline at end of file
diff --git a/unittests/tests.h b/unittests/tests.h
index 47fe48d..90830ec 100644
--- a/unittests/tests.h
+++ b/unittests/tests.h
@@ -8,4 +8,5 @@
 void test_1();
 void test_2();
 void test_3();
-void test_4();
\ No newline at end of file
+void test_4();
+void test_5();
\ No newline at end of file