diff --git a/libraries/procedural/src/procedural/Procedural.cpp b/libraries/procedural/src/procedural/Procedural.cpp
index c5bfa43e75..9940da0b9a 100644
--- a/libraries/procedural/src/procedural/Procedural.cpp
+++ b/libraries/procedural/src/procedural/Procedural.cpp
@@ -225,7 +225,7 @@ void Procedural::prepare(gpu::Batch& batch,
                          const glm::vec3& position,
                          const glm::vec3& size,
                          const glm::quat& orientation,
-                         const quint64& created,
+                         const uint64_t& created,
                          const ProceduralProgramKey key) {
     std::lock_guard<std::mutex> lock(_mutex);
     _entityDimensions = size;
@@ -233,7 +233,7 @@ void Procedural::prepare(gpu::Batch& batch,
     _entityOrientation = glm::mat3_cast(orientation);
     _entityCreated = created;
     if (!_shaderPath.isEmpty()) {
-        auto lastModified = (quint64)QFileInfo(_shaderPath).lastModified().toMSecsSinceEpoch();
+        auto lastModified = (uint64_t)QFileInfo(_shaderPath).lastModified().toMSecsSinceEpoch();
         if (lastModified > _shaderModified) {
             QFile file(_shaderPath);
             file.open(QIODevice::ReadOnly);
diff --git a/libraries/procedural/src/procedural/Procedural.h b/libraries/procedural/src/procedural/Procedural.h
index b8fd77b052..956cef368f 100644
--- a/libraries/procedural/src/procedural/Procedural.h
+++ b/libraries/procedural/src/procedural/Procedural.h
@@ -83,10 +83,10 @@ public:
     bool isReady() const;
     bool isEnabled() const { return _enabled; }
     void prepare(gpu::Batch& batch, const glm::vec3& position, const glm::vec3& size, const glm::quat& orientation,
-                 const quint64& created, const ProceduralProgramKey key = ProceduralProgramKey());
+                 const uint64_t& created, const ProceduralProgramKey key = ProceduralProgramKey());
 
     glm::vec4 getColor(const glm::vec4& entityColor) const;
-    quint64 getFadeStartTime() const { return _fadeStartTime; }
+    uint64_t getFadeStartTime() const { return _fadeStartTime; }
     bool isFading() const { return _doesFade && _isFading; }
     void setIsFading(bool isFading) { _isFading = isFading; }
     void setDoesFade(bool doesFade) { _doesFade = doesFade; }
@@ -136,7 +136,7 @@ protected:
     // Rendering object descriptions, from userData
     QString _shaderSource;
     QString _shaderPath;
-    quint64 _shaderModified { 0 };
+    uint64_t _shaderModified { 0 };
     NetworkShaderPointer _networkShader;
     bool _shaderDirty { true };
     bool _uniformsDirty { true };
@@ -156,12 +156,12 @@ protected:
     glm::vec3 _entityDimensions;
     glm::vec3 _entityPosition;
     glm::mat3 _entityOrientation;
-    quint64 _entityCreated;
+    uint64_t _entityCreated;
 
 private:
     void setupUniforms();
 
-    mutable quint64 _fadeStartTime { 0 };
+    mutable uint64_t _fadeStartTime { 0 };
     mutable bool _hasStartedFade { false };
     mutable bool _isFading { false };
     bool _doesFade { true };
diff --git a/libraries/procedural/src/procedural/ProceduralSkybox.cpp b/libraries/procedural/src/procedural/ProceduralSkybox.cpp
index bf8e408e70..53df1532dc 100644
--- a/libraries/procedural/src/procedural/ProceduralSkybox.cpp
+++ b/libraries/procedural/src/procedural/ProceduralSkybox.cpp
@@ -17,7 +17,7 @@
 #include <ViewFrustum.h>
 #include <shaders/Shaders.h>
 
-ProceduralSkybox::ProceduralSkybox(quint64 created) : graphics::Skybox(), _created(created) {
+ProceduralSkybox::ProceduralSkybox(uint64_t created) : graphics::Skybox(), _created(created) {
     _procedural._vertexSource = gpu::Shader::createVertex(shader::graphics::vertex::skybox)->getSource();
     _procedural._opaqueFragmentSource = shader::Source::get(shader::procedural::fragment::proceduralSkybox);
     // Adjust the pipeline state for background using the stencil test
diff --git a/libraries/procedural/src/procedural/ProceduralSkybox.h b/libraries/procedural/src/procedural/ProceduralSkybox.h
index 1b01b891d3..a1d7ea8fa7 100644
--- a/libraries/procedural/src/procedural/ProceduralSkybox.h
+++ b/libraries/procedural/src/procedural/ProceduralSkybox.h
@@ -19,7 +19,7 @@
 
 class ProceduralSkybox: public graphics::Skybox {
 public:
-    ProceduralSkybox(quint64 created = 0);
+    ProceduralSkybox(uint64_t created = 0);
     
     void parse(const QString& userData) { _procedural.setProceduralData(ProceduralData::parse(userData)); }
 
@@ -29,11 +29,11 @@ public:
     void render(gpu::Batch& batch, const ViewFrustum& frustum) const override;
     static void render(gpu::Batch& batch, const ViewFrustum& frustum, const ProceduralSkybox& skybox);
 
-    quint64 getCreated() const { return _created; }
+    uint64_t getCreated() const { return _created; }
 
 protected:
     mutable Procedural _procedural;
-    quint64 _created;
+    uint64_t _created;
 };
 typedef std::shared_ptr< ProceduralSkybox > ProceduralSkyboxPointer;