diff --git a/unittests/test_6.c b/unittests/test_6.c
new file mode 100644
index 0000000..f01031f
--- /dev/null
+++ b/unittests/test_6.c
@@ -0,0 +1,8 @@
+#include "tests.h"
+
+void test_6()
+{
+    printf("TEST 6 STARTET\n");
+    assert(!printEndMsg(500, 875));
+    printf("TEST 6 ERFOLGREICH\n");
+}
\ No newline at end of file
diff --git a/unittests/test_main.c b/unittests/test_main.c
index bc9cb02..355834a 100644
--- a/unittests/test_main.c
+++ b/unittests/test_main.c
@@ -9,4 +9,5 @@ int main()
     test_3();
     test_4();
     test_5();
+    test_6();
 }
\ No newline at end of file
diff --git a/unittests/tests.h b/unittests/tests.h
index 90830ec..690d748 100644
--- a/unittests/tests.h
+++ b/unittests/tests.h
@@ -9,4 +9,5 @@ void test_1();
 void test_2();
 void test_3();
 void test_4();
-void test_5();
\ No newline at end of file
+void test_5();
+void test_6();
\ No newline at end of file