diff --git a/src/commonMain/kotlin/com/infendro/bytes/bytearray/Operator.kt b/src/commonMain/kotlin/com/infendro/bytes/bytearray/Operator.kt
index 3e198d7..fd44c2e 100644
--- a/src/commonMain/kotlin/com/infendro/bytes/bytearray/Operator.kt
+++ b/src/commonMain/kotlin/com/infendro/bytes/bytearray/Operator.kt
@@ -41,7 +41,7 @@ fun ByteArray.andInto(
     }
 }
 
-fun ByteArray.andWith(that: ByteArray, startIndex: Int = 0, endIndex: Int = size, thatStartIndex: Int) =
+fun ByteArray.andWith(that: ByteArray, startIndex: Int = 0, endIndex: Int = size, thatStartIndex: Int = 0) =
     andInto(that, this, startIndex, startIndex, endIndex, thatStartIndex)
 
 fun ByteArray.andWith(that: Byte, startIndex: Int = 0, endIndex: Int = size) =
@@ -95,7 +95,7 @@ fun ByteArray.orInto(
     }
 }
 
-fun ByteArray.orWith(that: ByteArray, startIndex: Int = 0, endIndex: Int = size, thatStartIndex: Int) =
+fun ByteArray.orWith(that: ByteArray, startIndex: Int = 0, endIndex: Int = size, thatStartIndex: Int = 0) =
     orInto(that, this, startIndex, startIndex, endIndex, thatStartIndex)
 
 fun ByteArray.orWith(that: Byte, startIndex: Int = 0, endIndex: Int = size) =
@@ -149,7 +149,7 @@ fun ByteArray.xorInto(
     }
 }
 
-fun ByteArray.xorWith(that: ByteArray, startIndex: Int = 0, endIndex: Int = size, thatStartIndex: Int) =
+fun ByteArray.xorWith(that: ByteArray, startIndex: Int = 0, endIndex: Int = size, thatStartIndex: Int = 0) =
     xorInto(that, this, startIndex, startIndex, endIndex, thatStartIndex)
 
 fun ByteArray.xorWith(that: Byte, startIndex: Int = 0, endIndex: Int = size) =