diff --git a/client/src/main/kotlin/org/hso/texturesyncclient/model/DataModel.kt b/client/src/main/kotlin/org/hso/texturesyncclient/model/DataModel.kt
index 588006d..e75febd 100644
--- a/client/src/main/kotlin/org/hso/texturesyncclient/model/DataModel.kt
+++ b/client/src/main/kotlin/org/hso/texturesyncclient/model/DataModel.kt
@@ -52,7 +52,7 @@ class Sha256 {
     override fun toString(): String {
         val s = StringBuilder(64)
         for (byte in hashBytes) {
-            s.append(String.format("%02X"), byte)
+            s.append(String.format("%02X", byte))
         }
         return s.toString()
     }