diff --git a/src/test/c/test_hangman_test.c b/src/test/c/test_hangman_test.c
index 6f70048..f244008 100644
--- a/src/test/c/test_hangman_test.c
+++ b/src/test/c/test_hangman_test.c
@@ -35,4 +35,18 @@ void test_buchstabe_im_zu_erratenden_wort_eingabe_j_in_joe_richtig() {
 	TEST_ASSERT_EQUAL_INT(expected, actual);
 }
 
+void test_buchstabe_im_zu_erratenden_wort_eingabe_k_in_joe_falsch() {
+    // arrange
+	int expected = 1;
+    int actual;
+	char guessed_letter = 'k';
+	char secret_word[100] = "joe";
+	
+    // act
+	actual = buchstabe_im_zu_erratenden_wort(guessed_letter, secret_word);
+
+    // assert
+	TEST_ASSERT_EQUAL_INT(expected, actual);
+}
+
 #endif // TEST