diff --git a/src/test/c/test_Mathe.c b/src/test/c/test_Mathe.c
index c9e77f4..3cd0107 100644
--- a/src/test/c/test_Mathe.c
+++ b/src/test/c/test_Mathe.c
@@ -58,6 +58,12 @@ TEST_ASSERT_INT_WITHIN (10, 1, a);
 }
 
 
+void testGeneriereZufallsOperator() {
+    // Since the function always returns one of {'+', '-', '*', '/'}, no specific range check is needed.
+    char result = generiereZufallsOperator();
+    TEST_ASSERT_TRUE(result == '+' || result == '-' || result == '*' || result == '/');
+}
+