diff --git a/programs/mutant-2/swen90006/passbook/PassBook.java b/programs/mutant-2/swen90006/passbook/PassBook.java
index 94e2dfdcd19284dafa914ed1214ff926ea3318da..9ea7fdabc035f38cc9605ca68465c4c3803ae085 100644
--- a/programs/mutant-2/swen90006/passbook/PassBook.java
+++ b/programs/mutant-2/swen90006/passbook/PassBook.java
@@ -104,7 +104,7 @@ public class PassBook
 		}
 	    }
 
-	    if (!containsLowerCase || !containsUpperCase || !containsNumber) {
+	    if (!containsLowerCase && !containsUpperCase || !containsNumber) {
 		throw new WeakPassphraseException(passphrase);
 	    }
 	}