diff --git a/agw.go b/agwpe.go
similarity index 91%
rename from agw.go
rename to agwpe.go
index 46b1785..61e2372 100644
--- a/agw.go
+++ b/agwpe.go
@@ -26,7 +26,7 @@ func (f *Frame) Serialize() []byte {
 	// Ignore reserved byte 7
 	copy(buf[8:18], f.CallFrom[:])
 	copy(buf[18:28], f.CallTo[:])
-	binary.BigEndian.PutUint32(buf[28:32], f.DataLen)
+	binary.LittleEndian.PutUint32(buf[28:32], f.DataLen)
 	copy(buf[32:36], f.User[:])
 
 	return buf
diff --git a/agwpe_test.go b/agwpe_test.go
new file mode 100644
index 0000000..f52728f
--- /dev/null
+++ b/agwpe_test.go
@@ -0,0 +1 @@
+agwpe_test.go
diff --git a/go.mod b/go.mod
index 55192b2..41052f3 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
-module go-agw/agw
+module go-agwpe/agwpe
 
 go 1.24.5