diff --git a/tests/missing_colon.py b/tests/missing_colon.py
index 20edef5..ec220af 100755
--- a/tests/missing_colon.py
+++ b/tests/missing_colon.py
@@ -1,10 +1,15 @@
 #!/usr/bin/env python3
 
 
-def division(a: float, b: float) -> float
-    return a/b
+def division(a: float, b: float) -> float:
+    if b == 0:
+        raise ValueError("Cannot divide by zero")
+    return a / b
 
 
 if __name__ == "__main__":
-    print(division(123, 15))
+    try:
+        print(division(23, 0))
+    except ValueError as e:
+        print(e)