diff --git a/unittests/test_10.c b/unittests/test_10.c
new file mode 100644
index 0000000..f8f2218
--- /dev/null
+++ b/unittests/test_10.c
@@ -0,0 +1,8 @@
+#include "tests.h"
+
+void test_10()
+{
+    printf("TEST 10 STARTET\n");
+    assert(!printEndMsg(45, 25));
+    printf("TEST 10 ERFOLGREICH\n");
+}
\ No newline at end of file
diff --git a/unittests/test_main.c b/unittests/test_main.c
index 9659a60..db50b7e 100644
--- a/unittests/test_main.c
+++ b/unittests/test_main.c
@@ -13,4 +13,5 @@ int main()
     test_7();
     test_8();
     test_9();
+    test_10();
 }
\ No newline at end of file
diff --git a/unittests/tests.h b/unittests/tests.h
index dcd65a9..4650e39 100644
--- a/unittests/tests.h
+++ b/unittests/tests.h
@@ -13,4 +13,5 @@ void test_5();
 void test_6();
 void test_7();
 void test_8();
-void test_9();
\ No newline at end of file
+void test_9();
+void test_10();
\ No newline at end of file