diff --git a/libraries/networking/src/NLPacket.cpp b/libraries/networking/src/NLPacket.cpp
index 711114cc1e..1b1ac50eda 100644
--- a/libraries/networking/src/NLPacket.cpp
+++ b/libraries/networking/src/NLPacket.cpp
@@ -11,13 +11,13 @@
 
 #include "NLPacket.h"
 
-int64_t NLPacket::localHeaderSize(PacketType::Value type) {
-    int64_t size = ((NON_SOURCED_PACKETS.contains(type)) ? 0 : NUM_BYTES_RFC4122_UUID) +
+qint64 NLPacket::localHeaderSize(PacketType::Value type) {
+    qint64 size = ((NON_SOURCED_PACKETS.contains(type)) ? 0 : NUM_BYTES_RFC4122_UUID) +
                     ((NON_VERIFIED_PACKETS.contains(type)) ? 0 : NUM_BYTES_RFC4122_UUID);
     return size;
 }
 
-int64_t NLPacket::maxPayloadSize(PacketType::Value type) {
+qint64 NLPacket::maxPayloadSize(PacketType::Value type) {
     return Packet::maxPayloadSize(type) - localHeaderSize(type);
 }
 
@@ -47,7 +47,7 @@ std::unique_ptr<NLPacket> NLPacket::createCopy(const NLPacket& other) {
     return std::unique_ptr<NLPacket>(new NLPacket(other));
 }
 
-NLPacket::NLPacket(PacketType::Value type, int64_t size) : Packet(type, localHeaderSize(type) + size) {
+NLPacket::NLPacket(PacketType::Value type, qint64 size) : Packet(type, localHeaderSize(type) + size) {
 }
 
 NLPacket::NLPacket(const NLPacket& other) : Packet(other) {
diff --git a/libraries/networking/src/NLPacket.h b/libraries/networking/src/NLPacket.h
index 9368b25720..e70df1dad7 100644
--- a/libraries/networking/src/NLPacket.h
+++ b/libraries/networking/src/NLPacket.h
@@ -17,18 +17,18 @@
 class NLPacket : public Packet {
     Q_OBJECT
 public:
-    static std::unique_ptr<NLPacket> create(PacketType::Value type, int64_t size = -1);
+    static std::unique_ptr<NLPacket> create(PacketType::Value type, qint64 size = -1);
     // Provided for convenience, try to limit use
     static std::unique_ptr<NLPacket> createCopy(const NLPacket& other);
 
-    static int64_t localHeaderSize(PacketType::Value type);
-    static int64_t maxPayloadSize(PacketType::Value type);
+    static qint64 localHeaderSize(PacketType::Value type);
+    static qint64 maxPayloadSize(PacketType::Value type);
 
     virtual qint64 totalHeadersSize() const; // Cumulated size of all the headers
     virtual qint64 localHeaderSize() const;  // Current level's header size
 
 protected:
-    NLPacket(PacketType::Value type, int64_t size);
+    NLPacket(PacketType::Value type, qint64 size);
     NLPacket(const NLPacket& other);
 
     void setSourceUuid(QUuid sourceUuid);
diff --git a/libraries/networking/src/Packet.h b/libraries/networking/src/Packet.h
index 1de17602da..e9483ca1f1 100644
--- a/libraries/networking/src/Packet.h
+++ b/libraries/networking/src/Packet.h
@@ -23,7 +23,7 @@ class Packet : public QIODevice {
 public:
     using SequenceNumber = uint16_t;
 
-    static std::unique_ptr<Packet> create(PacketType::Value type, int64_t size = -1);
+    static std::unique_ptr<Packet> create(PacketType::Value type, qint64 size = -1);
     // Provided for convenience, try to limit use
     static std::unique_ptr<Packet> createCopy(const Packet& other);