diff --git a/archive/src/main/kotlin/org/openrs2/archive/key/TextKeyReader.kt b/archive/src/main/kotlin/org/openrs2/archive/key/TextKeyReader.kt
index cc453b34..7ef3ac58 100644
--- a/archive/src/main/kotlin/org/openrs2/archive/key/TextKeyReader.kt
+++ b/archive/src/main/kotlin/org/openrs2/archive/key/TextKeyReader.kt
@@ -7,10 +7,10 @@ public object TextKeyReader : KeyReader {
     override fun read(input: InputStream): Sequence<XteaKey> {
         val reader = input.bufferedReader()
 
-        val k0 = reader.readLine().toIntOrNull() ?: return emptySequence()
-        val k1 = reader.readLine().toIntOrNull() ?: return emptySequence()
-        val k2 = reader.readLine().toIntOrNull() ?: return emptySequence()
-        val k3 = reader.readLine().toIntOrNull() ?: return emptySequence()
+        val k0 = reader.readLine()?.toIntOrNull() ?: return emptySequence()
+        val k1 = reader.readLine()?.toIntOrNull() ?: return emptySequence()
+        val k2 = reader.readLine()?.toIntOrNull() ?: return emptySequence()
+        val k3 = reader.readLine()?.toIntOrNull() ?: return emptySequence()
 
         return sequenceOf(XteaKey(k0, k1, k2, k3))
     }