diff --git a/src/Credentials.java b/src/Credentials.java
index e6cd33d..7e436f6 100644
--- a/src/Credentials.java
+++ b/src/Credentials.java
@@ -14,16 +14,16 @@ public class Credentials {
     public boolean valid() {
 
         boolean usernameGiven = false;
-        String hashData;
+
 
         //iterator over file
         for (String line:
                 Helpers.readTextdatei("data/passwd.txt")) {
-            if(login == line) {
+            if(login.equals(line)) {
                 usernameGiven = true;
                 continue;
             }
-            if(usernameGiven && hash == line) {
+            if(usernameGiven && hash.equals(line)) {
                 return true;
             }
 
diff --git a/src/Main.java b/src/Main.java
index 6054a64..f5858db 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -2,4 +2,4 @@ public class Main {
     public static void main(String[] args) {
 
     }
-}
+}
\ No newline at end of file