diff --git a/Foundation/src/BinaryWriter.cpp b/Foundation/src/BinaryWriter.cpp
index a508af094..65d18ed55 100644
--- a/Foundation/src/BinaryWriter.cpp
+++ b/Foundation/src/BinaryWriter.cpp
@@ -138,13 +138,13 @@ BinaryWriter& BinaryWriter::operator << (double value)
 
 BinaryWriter& BinaryWriter::operator << (Int64 value)
 {
-	write(value, _flipBytes);
+	return write(value, _flipBytes);
 }
 
 
 BinaryWriter& BinaryWriter::operator << (UInt64 value)
 {
-	write(value, _flipBytes);
+	return write(value, _flipBytes);
 }